Get it now

Changelog

v3.2 ·

AI Integration & Major Enhancements

  • New AI Integration: You can now add your own API key for Anthropic, OpenAI, or Gemini and unlock AI-powered features across the SEO and Accessibility tools. More AI-powered features are coming soon.
  • New Screenshot Editor: The Screenshot Editor is now officially live and has moved out of beta.
  • New Backup & Restore: Added Backup & Restore options to the Settings tab. Easily back up your settings and work, then restore them on a new device or after reinstalling the extension.
  • New ZIP Asset Downloader: Added the ability to download all website assets in a single ZIP file, making it easier to save multiple assets with one click.
  • Fix Other minor bug fixes, performance improvements, and UI enhancements.
v3.1.1 ·

Screenshot Compatibility & UI Improvements

  • Fix Screenshot Capture: Improved compatibility with WordPress, Elementor, and Divi websites that use hidden elements or dynamic content that could previously cause issues during screenshot capture.
  • Improvement Screenshot Stability: Improved screenshot rendering and capture reliability across complex website layouts and dynamically loaded content.
  • Improvement UI Improvements: Refined several interface elements for a cleaner and more consistent user experience.
  • Improvement Performance Improvements: Optimized various tools for smoother performance and faster response times.

🙌 Special Thanks

A big thank you to @Charlotte for reporting these issues and helping us identify areas that needed improvement. Your detailed feedback has helped us make DevToolkit more stable, reliable, and compatible with more websites. We truly appreciate your support! 💙

v3.1 ·

Stability & Quality Update

  • New Dark Mode: Added support for enabling Schedule Mode on individual websites instead of applying it globally.
  • New Premium Offers: Added a new Offers tab in settings for Pro users, providing access to exclusive promotions and free coupon offers.
  • Fix SEO Images Report: Fixed an issue where long image URLs pushed the Dimensions and Issues columns outside the visible report area in pdf report.
  • Fix Quick Copy: Fixed an issue where the Alt + Hold action did not work on the first attempt.
  • Fix SEO PDF Report: Improved the report layout by preventing long URLs from pushing the status code out of view in pdf report.
  • Fix Screenshot Tool: Fixed an issue where websites with large sticky headers could capture a larger area than expected during full-page screenshots.
  • Improvement SEO Audit: Improved the SEO scoring algorithm to provide more accurate scores based on issue priority and overall page health.
  • Improvement Edit Mode: Improved editing performance, stability, and overall user experience.
  • Improvement Responsive Preview: Fixed sync-related issues and several minor UI bugs for a smoother responsive testing workflow.
  • Improvement Ruler: Refined the interface and improved overall usability.
  • Improvement Element Remover: Enhanced the interface for a cleaner and more intuitive experience.
  • Improvement Other performance optimizations, UI refinements, and stability improvements.

🙌 Special Thanks

A big thank you to @Alexander Senger, @Luca Rossi, @Daniel Thompson, and @Mateusz Kowalski for taking the time to report bugs, share feedback, and suggest improvements. Your valuable contributions help us make DevToolkit more stable, reliable, and enjoyable for everyone. We truly appreciate your support! 💙

v3.0 ·

Major Feature Update

  • New World Clock — Track multiple time zones with UTC offsets, DST support, working hours, and time comparison.
  • New Reader Mode — Read distraction-free with customizable themes, typography, read aloud, reading list, and PDF export.
  • New Dark Mode — Instantly enable dark mode on any website.
  • New UTM Builder — Generate and manage marketing URLs with reusable templates.
  • New Sticky Notes — Create page-specific notes that automatically appear when you revisit a website.
  • New Layout Tools — Inspect layouts with Box Model, Element Outline, Flex/Grid overlays, Column Grid, Breakpoint Indicator, and Element Navigator.
  • New Visual Editor — Edit text, images, styles, spacing, and layouts directly on any webpage.
  • New Difference Checker — Compare text or code with clear change highlighting.
  • New Accessibility Checker — Scan websites for WCAG issues, contrast problems, form accessibility, and structural improvements.
  • New API Tester — Send, test, and debug HTTP requests with headers, authentication, query parameters, and response inspection.
  • New Tab Manager — Search, organize, group, deduplicate, and save browser tabs and sessions.
  • Improvement Full Page Screenshot — Improved capture accuracy, reliability, and compatibility with complex and dynamic webpages.
  • Improvement Debug Panel — Faster site cleanup and improved debugging workflow.
  • Improvement SEO Audit — More accurate analysis with expanded reporting and improved issue detection.
  • Improvement Ruler — Enhanced measurement precision, smoother interactions, and better element detection.
  • Improvement General performance optimizations, UI refinements, and stability improvements.
v2.4 ·

QR Code Generator

  • New QR Code Generator — Generate QR codes for URLs, text, email, phone numbers, SMS, Wi-Fi, and vCards. Customize with logos, colors, styles, and error correction, then export as PNG or SVG, copy to the clipboard, or save reusable presets. Launch instantly with the J keyboard shortcut.
  • Improvement Full Page Screenshot — Improved handling of sticky headers and floating elements for more accurate captures.
  • Improvement Screenshot Editor — Now supports all capture modes, including Full Page, Legacy, and Visible Area.
  • Fix Various bug fixes, performance improvements, and UI refinements.

🎉 Hidden Gift for Changelog Readers

Thanks for taking the time to read the changelog! As a small thank-you, the first 3 users can unlock DevToolkit Pro for free using the coupon code:

CHANGELOG100

Offer expires 25 June or once all redemptions have been claimed.

v2.3.2 ·

Maintenance Update

  • Improvement Screenshot Editor is now the default experience. Every capture opens directly in the editor before saving or downloading
  • Improvement Search — Starred tools are now hidden while searching, providing cleaner and more focused search results.
  • Fix Screenshot Editor — Fixed an issue where the previous screenshot could appear instead of the most recent capture.
  • Fix General bug fixes, stability improvements, and UI refinements.
v2.3.1 ·

Stability Update

  • Improvement Screenshot Editor (Beta) is now enabled by default and opens automatically after every capture.
  • Improvement Debug Panel — Only Cache is selected by default when clearing site data to help prevent accidental loss of cookies and local storage.
  • Improvement Ruler Tool — Added an Apply button to preserve measurements when switching between tools.
  • Fix Fixed ruler measurements disappearing in screenshot editor after changing tools.
  • Fix Fixed color copying on certain websites.
  • Fix Fixed incorrect color detection on some webpages.
  • Fix Fixed Color History not saving newly picked colors.
  • Fix General bug fixes, stability improvements, and performance optimizations.
v2.3 ·

Screenshot Overhaul

  • New Full Page Screenshot — Completely rebuilt for improved speed, reliability, and capture quality.
  • New Added three capture modes: Full Page (Recommended), Legacy, and Visible Area.
  • New Floating elements such as chat widgets, cookie banners, and scroll-to-top buttons are automatically hidden during capture.
  • New Added PDF as a supported export format alongside PNG and JPEG.
  • New Screenshot Editor (Beta) — Review and edit screenshots before saving. Enable from Settings → Capture → After Capture.
  • New All users can rename, download, copy, print, and export screenshots as PNG, JPEG, or PDF.
  • New Pro: Added crop, blur, redact, highlighter, ruler, shapes, arrows, lines, and text annotation tools.
  • New Mockup Generator — Now captures full-page screenshots for richer, more realistic device mockups.
  • New Added new mockup options for frame count, capture delay, and automatic scroll reset.
  • New Added After Capture settings to choose between instant download or opening the Screenshot Editor.
  • New Added dedicated Mockup settings for capture and quality preferences.
  • New Added licence recovery link and quick access to the Customer Portal for Pro users.
  • Improvement Improved screenshot rendering accuracy on complex and dynamic webpages.
  • Improvement Refined mockup appearance with a cleaner default background and improved shadow rendering.
  • Improvement Improved overall screenshot and mockup generation performance.
  • Improvement Various UI refinements and usability improvements.
  • Fix Fixed CSS Inspector copy actions on HTTP websites.
  • Fix Fixed Color Picker clipboard support on HTTP websites.
  • Fix Fixed Color History not updating after selecting a color.
  • Fix Fixed browser scrollbar appearing in full-page captures.
  • Fix Fixed floating elements appearing in screenshot frames.
  • Fix Fixed mockup shadow visibility on light backgrounds.
  • Fix Fixed extra whitespace in Stack-style mockups.
  • Fix Fixed Rate Us stars not rendering correctly.
  • Fix General bug fixes and stability improvements.
v2.2 ·

Power Tools Update

  • New Edit Mode — Edit webpage text directly in your browser. Changes reset on refresh.
  • New Site Lock — Protect websites with a 4-digit PIN and instantly lock the current tab. Locks reset when the browser session ends.
  • New String Tool — Analyze text with live statistics, case conversions, text transformations, regex-based Find & Replace, and platform character limits.
  • New Wellness Breaks — Stay healthy with 13 customizable reminders for posture, hydration, eye care, and movement. Settings persist across browser restarts.
  • New Dev Formatter — Added 10 developer utilities including JSON formatter, Base64, JWT decoder, URL tools, Unix Timestamp converter, UUID generator, hash generator, HTML Entities, CSS formatter/minifier, and Number Base converter.
  • New CSS Inspector — Added page-wide Color Palette and Typography analysis.
  • New SEO Audit — Export complete SEO reports as professionally formatted PDF files.
  • Improvement Font Detector — Downloads only the font weights and Latin subset used on the page, significantly reducing download size.
  • Improvement Mockup Generator — Improved capture workflow for more reliable screenshots.
  • Improvement Debug Panel — Custom HTML, CSS, and JavaScript editors now maintain independent saved content.
  • Improvement Settings — Replaced inline event handlers with Manifest V3 compliant event listeners.
  • Fix Fixed screenshot badge initialization on popup startup.
  • Fix Fixed Content Security Policy warning for the Settings page logo.
  • Fix General bug fixes and performance improvements.
v2.1 ·

Productivity Update

  • New Star / Quick Access — pin any tool to the top of the popup for instant access
  • New Keyboard shortcuts — launch any tool with a single key press (press ? to see all shortcuts)
  • New Rate Us — rate DevToolkit from the popup or Settings → Rate Us
  • Improvement Full page screenshot now correctly loads lazy images before capturing
  • Improvement Full page screenshot now renders vh-based sections at the correct height
  • Improvement Blocked sites (strict CSP) now show a clear message instead of silently failing
  • Fix Element Remover restore button now works correctly
  • Fix Element Remover quick actions no longer affect the extension’s own toolbar
  • Fix Asset Downloader correctly detects file extensions from CDN URLs

v3.0

New Features

  • World Clock: Track multiple time zones with advanced tools including 12/24-hour format, time comparison slider, UTC offsets, DST information, dates, and working hour indicators.
  • Reader Mode: Enjoy a cleaner reading experience with customizable themes, fonts, font size, spacing, and page width. Includes save to PDF, reading list, and read aloud support.
  • Dark Mode: Enable dark mode on any website instantly for a more comfortable browsing experience and reduced eye strain.
  • UTM Builder: Create professional tracking URLs with source, medium, campaign, term, and content parameters. Save templates and generate marketing links faster.
  • Sticky Notes: Add notes directly to websites and keep page-specific reminders, ideas, and feedback available whenever you return.
  • Layout Tools: Inspect website layouts with Box Model Inspector, Element Outline, Flex & Grid Highlight, Column Grid, Breakpoint Indicator, and Element Navigator.
  • Visual Editor: Edit websites visually in real time. Modify text, images, fonts, colors, spacing, and preview design changes directly in the browser.
  • Difference Checker: Compare text, code, or content instantly with clear highlights for additions, removals, and changes.
  • Accessibility Checker: Scan websites for accessibility issues, WCAG checks, contrast problems, images, structure, forms, and improvement suggestions.
  • API Tester: Test and debug APIs directly from your browser. Send requests, configure headers, parameters, authentication, and inspect responses instantly.
  • Tab Manager: Organize your browser tabs with search, grouping, duplicate cleanup, session saving, and advanced tab management features.

Improvements

  • Screenshot Improvements: Enhanced screenshot capture reliability, performance, and support for complex pages with sticky headers and dynamic content.
  • Debug Tool Improvements: Faster cleanup and testing with improved debugging tools.
  • SEO Tool Improvements: Enhanced SEO analysis with better detection, improved reporting accuracy, and more detailed website insights.
  • Ruler Improvements: Improved measurement accuracy, smoother controls, and better element detection for precise page measurements.
  • Additional performance improvements, UI enhancements, and bug fixes.

v2.4

New Features

  • QR Code Generator: Generate QR codes for URLs, text, email, phone, SMS, WiFi, and vCards. Customize them with logos, colors, styles, and error correction, then download as PNG or SVG, copy to the clipboard, or save presets for reuse. Open with the J shortcut.

Fixes

  • Screenshot Improvements: Full-page screenshots now handle sticky headers and floating elements far more reliably. The Screenshot Editor now opens for all three capture modes — including Capture Legacy (v1). Previously the editor only worked with the recommended capture mode.
  • Additional Bug Fixes and Improvements

🎉 Hidden Gift for Changelog Readers!

If you’re reading this, you’re one of the real fans who actually checks the changelog. As a small thank you, the first 3 users can get the Pro version completely free with coupon code:

CHANGELOG100

The coupon expires on 25 June, so grab it before it’s gone. Thank you for your support! ❤️

v2.3.2

Bug Fixes & Improvements

Screenshot Editor

  • Fixed Screenshot Editor is now the default experience for all users. After every capture, your screenshot opens directly in the editor so you can crop, annotate, and save before downloading.
  • Fixed an issue where the editor sometimes showed a previous screenshot instead of the latest capture.

Search

  • Starred tools are now hidden while searching so results appear cleanly without anything in the way. They return automatically when the search is cleared.

General

  • Other minor bugs fixes and improvment

v2.3.1

Bug Fixes & Improvements

Screenshot

  • Fixed an issue where some sections of the page were being cut or broken in full-page screenshots.
  • Fixed blank white space appearing at the bottom of screenshots on long pages.
  • Fixed the WordPress admin toolbar appearing twice in screenshots when logged in.
  • Fixed a 35px blank space appearing at the top of screenshots on WordPress sites.
  • Fixed screenshots failing silently on very long pages due to browser canvas size limits.

Screenshot Editor

  • Screenshot Editor (Beta) is now the default mode for all users. After capturing a screenshot, it opens automatically in the editor.
  • Fixed the Ruler tool — measurements were disappearing when switching to another tool. Ruler now has an Apply button to keep the measurement permanently.

Color Picker

  • Fixed color copying not working on some websites.
  • Fixed color picker returning incorrect colors on some websites.
  • Fixed color history not saving after picking a color.

Debug Panel

  • Cache is now the only option checked by default. Cookies and localStorage are no longer pre-selected to prevent accidental data loss.

General

  • Other minor bug fixes and improvements.

v2.3

New Features

  • Screenshot
    The full-page screenshot tool has been completely rebuilt from scratch.
    Three capture options are now available, full page (recommended), legacy, and visible area only.
    Screenshots now correctly hide floating elements like chat widgets, cookie banners, and scroll-to-top buttons. 
    PDF added as an export format alongside PNG and JPEG.
  • Screenshot Editor (Beta)
    After capturing a screenshot, you can now open it in a full editing view before saving. Enable it in Settings → Capture → After Capture.
    Everyone gets: rename, download, copy to clipboard, print, and save as PNG, JPEG, or PDF.
    Pro users get additional editing tools: crop with draggable handles, highlight pen, blur and redact sensitive areas, pixel ruler, shape drawing (rectangle, circle, arrow, line), and text labels. 
  • Mockup Generator
    Device mockups now show a taller, richer screenshot of the website instead of just the visible area. 
    Drop shadow now works correctly on light backgrounds.
    Default background changed to light, cleaner and more professional out of the box.
    New mockup settings added: choose how many frames to capture, set the delay between frames, and control whether the page scrolls back to the top after capture.
  • Settings
    New “After Capture” option — choose between instant download or opening the Screenshot Editor after every capture.
    New Mockup section in settings for capture and quality controls.
    Lost your licence key? A recovery link is now available on the Licence page for all users.
    Pro users now have a Customer Portal link in both the Licence page and the three-dot menu in the sidebar.

Bug Fixes

  • Fixed CSS Inspector copy buttons not working on HTTP websites.
  • Fixed color picker clipboard not copying on HTTP websites.
  • Fixed color history not updating after picking a color.
  • Fixed mockup drop shadow not visible on light backgrounds.
  • Fixed blank white space at the bottom of Stack style mockups.
  • Fixed screenshot capturing floating elements in every frame.
  • Fixed browser scrollbar appearing in full-page screenshots.
  • Fixed Rate Us stars not displaying correctly.

v2.2

New Features

  • Edit Mode — click any text on a page and edit it directly in the browser, like a notepad. Changes reset on refresh.
  • Site Lock — lock any website behind a 4-digit PIN. Includes a Lock Now button to instantly lock the current tab. Changes reset when the browser session ends.
  • String Tool — live word, character, sentence, paragraph, and reading time stats. Case conversions (UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case), 8 text transforms, and Find & Replace with regex support. Platform character limit bars for Twitter, Meta description, page title, and LinkedIn.
  • Wellness Breaks — 13 timer-based health reminders for eye care, posture, hydration, and movement. Each rule fires a desktop notification on a set interval. Active rules survive browser restarts. Includes 6 setup tips for screen distance, brightness, night mode, and sleep.
  • Dev Formatter (Pro) — 10 developer tools in one panel: JSON formatter with syntax highlighting, Base64 encode/decode, JWT decoder with expiry warning, URL encoder/decoder/parser, Unix Timestamp converter with live clock, UUID v4 generator and validator, MD5/SHA-1/SHA-256/SHA-512 hash generator, HTML Entities encoder/decoder, CSS formatter and minifier, Number Base converter (Decimal, Binary, Hex, Octal).
  • Color Palette and Typography in Inspector — Scan Page button inside the CSS Inspector extracts all colors used on the page as clickable swatches and lists all fonts with their size ranges and weights.
  • SEO Report PDF Export — Download PDF button in the SEO panel exports a formatted A4 report with all sections, score, and a DevToolkit header.

Improvements

  • Font Detector downloads now only fetch the weights actually used on the page and the Latin character subset only — reducing downloads from 10–20 files to 1–4 files named by weight (e.g. Inter-400.woff2, Inter-700.woff2).
  • Mockup Generator Re-capture button removed — it was capturing the wrong tab (the panel itself). Capture now always happens correctly from the popup.
  • Debug panel — Custom Code tabs now save content independently. Switching between JS, CSS, and HTML tabs no longer shares or clears other tabs’ content.
  • Settings — all inline onclick handlers replaced with proper event listeners to comply with Manifest V3 Content Security Policy.

Fixes

  • refreshShotBadge no longer throws “is not defined” on popup open — screenshot.js now self-initialises the badge after loading.
  • Settings page sidebar logo link no longer throws a Content Security Policy violation.
  • Other bug fixes and improvements

v2.1

New Features

  • Star / Quick Access — pin any tool to the top of the popup for instant access
  • Keyboard shortcuts — launch any tool with a single key press (press ? to see all shortcuts)
  • Rate Us — rate DevToolkit from the popup or Settings → Rate Us

Improvements

  • Full page screenshot now correctly loads lazy images before capturing
  • Full page screenshot now renders vh-based sections at the correct height
  • Sticky and fixed headers no longer appear duplicated in screenshots
  • Blocked sites (strict CSP) now show a clear message instead of silently failing
  • Settings → About now lists all 18 tools with descriptions
  • Settings → Changelog links to the full release history on the website
  • Extension icon shows a NEW badge after each update

Fixes

  • Element Remover restore button now works correctly
  • Element Remover quick actions no longer affect the extension’s own toolbar
  • Asset Downloader correctly detects file extensions from CDN URLs

v2.0

New Features

  • DevToolkit Pro — one-time licence with lifetime access and all future tools included
  • Responsive Preview — live side-by-side iframes at Mobile, Tablet, and Desktop breakpoints
  • Font Detector & Downloader — identify every font rendering on a page and download the files
  • Email Finder — extract all public email addresses from a page with deep scan and CSV export
  • Cookie Editor — view, create, edit, and delete cookies with import/export support
  • Element Remover — hide, remove, or blur any element on any page with undo and CSS export
  • Mockup Generator — turn any screenshot into a device mockup for client presentations
  • Ruler & Measurement — measure any element or distance on any page with pixel precision
  • Settings → Licence — activate, validate, and deactivate your Pro licence key
  • Upgrade prompt shown inside each Pro tool for free users with a direct checkout link

Improvements

  • Pro tools show a lock badge for free users instead of no indicator
  • Settings → About updated with full feature list for free and Pro tools
  • Support link added to popup footer and Settings → About page

v1.0

Initial Release

  • Full Page Screenshot — capture complete screenshots in PNG or JPEG with custom scale and filename
  • Color Picker — sample any color from any webpage and copy as HEX, RGB, HSL, or HSV
  • CSS Inspector — hover any element to view its computed styles, layout, and box model
  • Asset Downloader — discover and download all images on a page including lazy-loaded assets
  • Debug Panel — clear cache and site data, inject custom CSS or JavaScript for live testing
  • SEO Audit — instant on-page report covering meta tags, headings, Open Graph, and structured data
  • Sitestack Detector — identify the CMS, framework, CDN, and hosting provider of any website
  • Task Reminders — create reminders with desktop notifications that fire even when the popup is closed
  • Quick Admin Login — one-click access to the admin panel of supported CMS platforms