What&#x27;s New in <span class="bg-gradient-to-r from-primary to-accent bg-clip-text text-transparent">ToolBox

qr-codecomparisonfree-toolsprivacy

Best Free QR Code Generators Compared - No Watermarks, No Signups

Most QR code generators add watermarks on free tiers, require accounts, or limit downloads. We compared QR Code Generator, QRCode Monkey, GoQR.me, and ToolBox on features, pricing, and privacy.

March 9, 2026•6 min read

Best Free CSS Generators for Developers - Flexbox, Grid, Shadows, and More

CSS generators are scattered across dozens of single-purpose websites. One for gradients, another for shadows, a third for flexbox. We compared the best tools in each category and found that having them all in one place removes real friction.

cssweb-developmentcomparisonfree-toolsdesign

webhooksdeveloper-toolscomparisonfree-tools

Best Free Webhook Testing Tools Compared - RequestBin Alternatives

RequestBin went paid. Webhook.site limits free users to 500 requests. Pipedream requires an account and is overkill for simple inspection. We compared the remaining options for quick, free webhook testing.

pdfprivacycomparisonfree-tools

Best Free PDF Tools Online - Merge, Split, Compress Without Uploading

iLovePDF, SmallPDF, and PDF24 all upload your documents to their servers for processing. ToolBox uses pdf-lib to merge and split PDFs entirely in your browser. We compared features, limits, and privacy across all four.

March 9, 2026•4 min read

QR Code Generator - Create QR Codes Without Watermarks or Signups

Most free QR code generators plaster watermarks, limit downloads, or require accounts. ToolBox generates QR codes client-side - no watermark, unlimited, downloadable as PNG. Your data never leaves your browser.

qr-codeprivacycomparisonfree-tools

cssflexboxweb-developmentdesigntutorial

CSS Flexbox Generator - Build Layouts Without Memorizing Properties

Flexbox property names are ambiguous and easy to mix up. A visual generator lets you click, see the result, and copy the CSS. Four common layout patterns and how to build them without memorizing anything.

image-compressionprivacyclient-sidecomparison

Compress Images Without Uploading - Why Your Image Compressor Matters

Most image compressors upload your files to their servers for processing. TinyPNG, Compressor.io, and Optimizilla all do it. Your browser can compress images locally using the Canvas API - no upload needed.

translationprivacycomparisonfree-tools

Best Free Online Translators Compared - Google Translate vs DeepL vs ToolBox

Google Translate logs queries tied to your account. DeepL stores texts on their servers. ToolBox uses MyMemory with no user tracking. A direct comparison of features, quality, and privacy practices.

March 9, 2026•6 min read

Best Free Grammar Checkers Compared - Grammarly vs LanguageTool vs ToolBox

Grammarly requires an account and reads everything you type. LanguageTool is the open-source engine that works without signup. ToolBox wraps the same engine with no accounts, no upsells, and instant results.

grammarwritingprivacycomparisonfree-tools

March 8, 2026•8 min read

We Added AI Tools That Run Entirely in Your Browser

AI Chat, AI Code Explainer, and AI Text Summarizer - all powered by WebLLM and WebGPU. The AI model downloads once and runs locally. Your data never leaves your device. No API keys, no cloud inference, no privacy trade-offs.

aiwebllmwebgpuprivacyprolocal-ai

March 8, 2026•22 min read

ToolBox Pro API - 21 Endpoints for Developers

The ToolBox Pro API exposes 21 REST endpoints and a programmable tool-chain pipeline with 35+ processors. JSON formatting, hashing, Base64, CSV conversion, diff, regex testing, and more - all callable from scripts, CI pipelines, and backend services.

apideveloper-toolsprorest-apiautomation

March 8, 2026•15 min read

ToolBox Pro - What You Get and How It Works

ToolBox Pro removes daily operation limits, increases file sizes to 100MB, adds 21 API endpoints, and hides ads. No account required. No tracking. Subscription verified client-side with zero data storage on our servers.

prosubscriptionprivacyfeatures

March 3, 2026•18 min read

We Moved to Cloudflare - Why and What Changed

ToolBox migrated from Vercel to Cloudflare Pages. Static export for all 139+ tool pages, Pages Functions for API routes, ~3.3MB bundle size reduction, and KV storage for rate limiting. Here is what broke, what improved, and how the new architecture works.

infrastructurecloudflarevercelmigrationperformance

March 2, 2026•23 min read

I Tested What Happens When You Upload Files to Free Online Converters - Your Documents Are Not Private

I monitored the network traffic of popular file converters like iLovePDF, Smallpdf, and Convertio. One site set 637 cookies across 221 domains. Another admits to selling data to Google and Facebook.

privacysecurityfile-conversionweb-developmenttracking

March 2, 2026•19 min read

Your Code Is Not Private: I Audited What CodePen, JSFiddle, CodeSandbox, and Replit Do With Your Code

I planted fake API keys in online code editors and watched where they went. CodePen sends code to servers as you type. Replit sets 642 cookies and uses your keystrokes for AI training.

privacysecuritydeveloper-toolscode-editorstracking

March 2, 2026•23 min read

I Checked the Permissions of 10 Popular Chrome Extensions - 8 Can Read Everything You Type

Grammarly is functionally a keylogger. Honey lost 8 million users after getting caught stealing affiliate commissions. LastPass vaults were stolen and are being cracked years later. Here is the full audit.

privacysecuritychrome-extensionsbrowser-securitytracking

March 2, 2026•22 min read

Free Resume Builders Are Selling Your Career Data - I Audited resume.io, Zety, and Novoresume

Resume builders collect your most sensitive personal data - name, phone, address, work history - then share it with data brokers. One site has a 17-year tracking cookie. Another admits to selling data.

privacysecurityresumecareertracking

March 2, 2026•12 min read

I Audited the Privacy of Popular Free Dev Tools - The Results Are Terrifying

I tested what happens when you paste code into popular online developer tools. Some sites contact 96 external domains, set 540 cookies, and run real-time ad auctions on your data. Here is everything I found.

privacysecuritydeveloper-toolsweb-developmenttracking

February 25, 2026•20 min read

How to Create a Favicon for Your Website (Complete 2026 Guide)

Learn how to create, size, and add favicons to any website. Covers ICO, PNG, SVG formats, all required sizes, and common mistakes that break favicons on mobile.

faviconweb-developmenthtmlguide

February 25, 2026•18 min read

How to Test Webhooks Without Deploying: A Practical Guide

Learn how to test and debug webhook integrations locally without deploying code. Covers inspection techniques, common failures, and tools for capturing payloads.

webhooksapidebuggingguide

February 25, 2026•19 min read

What Is EXIF Data? How to View and Remove Photo Metadata

Your photos contain hidden metadata including GPS location, camera model, and timestamps. Learn what EXIF data is, how to view it, and how to strip it before sharing.

exifprivacyphotographyguide

February 25, 2026•21 min read

How to Merge and Split PDF Files Online (No Upload Required)

Combine multiple PDFs into one or extract specific pages from a PDF, entirely in your browser. No file uploads, no signup, no watermarks.

pdfproductivityprivacyguide

February 25, 2026•23 min read

Converting Tailwind CSS to Vanilla CSS: When and How

Need to remove the Tailwind dependency from a project? Learn when conversion makes sense, how utility classes map to CSS properties, and tools that automate the process.

tailwindcssweb-developmentguide

February 22, 2026•18 min read

Best Free Online Diff Checker in 2026: Comparing the Top Tools

We compared 8 online diff checkers on features, privacy, and pricing. Here is which ones are actually worth using and which ones send your code to their servers.

diff-checkercomparisondeveloper-toolsprivacy

February 22, 2026•16 min read

Best Free Online JSON Formatter in 2026: Security, Privacy, and Features Compared

After a major security breach exposed secrets on popular JSON formatters, we compared the top tools. Here is which ones are safe to use and which ones leaked API keys.

jsonsecuritydeveloper-toolsprivacy

February 22, 2026•26 min read

CyberChef vs DevToys vs ToolBox: Which Developer Toolkit Should You Use?

Three different approaches to developer tools: a government-built cipher machine, a desktop app, and a browser-based toolkit. We break down which one fits your workflow.

developer-toolscomparisoncyberchefdevtoysprivacy

February 21, 2026•15 min read

How to Minify CSS and JavaScript for Faster Websites

Learn what minification does, why it matters for web performance, and how to minify CSS and JavaScript instantly in your browser.

cssjavascriptperformanceweb-development

February 21, 2026•15 min read

SVG Optimization: How to Reduce SVG File Size Without Losing Quality

Learn how to optimize SVG files by removing metadata, simplifying paths, and cleaning up editor bloat. Reduce file size by 30-70% with no visual difference.

svgoptimizationperformanceweb-development

jsoncsvdata-conversiontutorial

How to Convert Between JSON and CSV Online (Complete Guide)

Learn when to convert JSON to CSV or CSV to JSON, how to handle nested objects and arrays, and the fastest way to do it in your browser.

urlencodingweb-developmenttutorial

URL Encoding Explained: A Developer's Complete Guide

Learn what URL encoding is, why certain characters must be percent-encoded, and how to encode and decode URLs correctly in any language.

February 21, 2026•17 min read

CSS Flexbox vs Grid: A Practical Guide to Choosing the Right Layout

Learn the real differences between CSS Flexbox and Grid, when each one shines, and how to combine them for modern responsive layouts.

cssflexboxgridweb-development

February 21, 2026•18 min read

DNS Lookup Explained: How to Check DNS Records Online

Learn what DNS records are, the different record types (A, AAAA, CNAME, MX, TXT), and how to look them up to debug domain and email issues.

dnsnetworkingweb-developmenttutorial

February 21, 2026•20 min read

AES Encryption Explained: How to Encrypt and Decrypt Data Securely

Learn how AES encryption works, the difference between AES-128 and AES-256, common modes like CBC and GCM, and how to encrypt data in your browser.

encryptionsecurityaestutorial

February 21, 2026•17 min read

How to Write Better Git Commit Messages (With Examples)

Learn the conventions behind good git commit messages, common formats like Conventional Commits, and how to generate clear commit messages instantly.

gitdeveloper-toolsbest-practicestutorial

sqlformattingdatabasesbest-practices

SQL Formatting Best Practices for Clean, Readable Queries

Learn how to format SQL queries for readability, the most common style conventions, and how to auto-format messy SQL instantly.

httpapideveloper-toolstutorial

How to Build and Test HTTP Requests Without Writing Code

Learn about HTTP methods, headers, status codes, and how to build and test API requests visually in your browser without tools like cURL or Postman.

cssborder-radiusweb-developmenttutorial

CSS Border Radius: A Complete Guide to Rounded Corners and Shapes

Learn how border-radius works in CSS, create circles, pills, blobs, and asymmetric shapes, and generate complex border-radius values visually.

February 21, 2026•15 min read

How to Generate and Test API Mock Responses for Development

Learn why mock APIs speed up frontend development, how to create realistic mock responses, and how to generate them instantly without a backend.

apimock-datadeveloper-toolstutorial

February 19, 2026•19 min read

How to Generate a UUID Online (And When You Should Use One)

Learn what UUIDs are, the differences between v1 and v4, when to use them over auto-increment IDs, and how to generate them instantly in your browser.

uuiddeveloper toolstutorialdatabases

February 19, 2026•20 min read

CSS Box Shadows: A Complete Guide With Examples

Learn CSS box-shadow syntax, create layered shadows, neumorphism effects, and glowing borders. Includes a visual generator for instant results.

cssbox-shadowdesigntutorial

February 19, 2026•20 min read

How to Write Meta Tags That Improve Your SEO and Click-Through Rate

A practical guide to HTML meta tags, Open Graph, and Twitter Cards. Learn which tags actually matter for SEO and how to generate them instantly.

seometa tagsopen graphtutorial

February 19, 2026•17 min read

Hash Functions Explained: MD5, SHA-1, and SHA-256 Compared

Learn what cryptographic hash functions are, how they work, and when to use MD5 vs SHA-1 vs SHA-256. Includes practical examples and a free online hash generator.

hashsecuritycryptographydeveloper toolstutorial

February 19, 2026•17 min read

How to Convert HTML to JSX for React (Complete Guide)

Learn the key differences between HTML and JSX, common conversion pitfalls, and how to convert HTML to valid React JSX instantly with a free online tool.

reactjsxhtmldeveloper toolstutorial

February 16, 2026•19 min read

How to Compare Two Texts Online With a Free Diff Checker

Learn how to use a free online diff checker to compare two texts, find differences in code, and track document changes â€” all without installing software.

diff checkercompare textdeveloper toolstutorial

February 16, 2026•16 min read

How to Test Regular Expressions Online (Step-by-Step Guide)

A practical guide to testing regex patterns online. Learn how to use a free regex tester to build, debug, and validate regular expressions for any language.

regexregular expressionsdeveloper toolstutorial

February 15, 2026•15 min read

Best Free Base64 Encoders & Decoders Compared (2026)

We compare the top free Base64 encoding tools â€” Base64Decode.org, Base64Encode.org, ToolBox, and others â€” on speed, privacy, features, and usability.

comparisonbase64developer-tools

February 15, 2026•13 min read

Best Free CSS Gradient Generators Compared (2026)

We compare the top free CSS gradient generators â€” CSSGradient.io, WebGradients, Grabient, and ToolBox â€” on features, usability, output quality, and privacy.

comparisoncssdesign-tools

February 15, 2026•20 min read

Best Free Password Generators Compared (2026)

We compare the top free password generators â€” 1Password, Bitwarden, LastPass, Norton, and ToolBox â€” on security, privacy, features, and usability.

comparisonsecuritypassword

comparisondiff-checkerdeveloper-tools

Best Free Online Diff Checkers Compared (2026)

We compare the top free diff checking tools â€” DiffChecker, DiffNow, TextCompare, Mergely, and ToolBox â€” on features, privacy, speed, and usability.

February 15, 2026•22 min read

11 Third-Party Integrations: Prettier, GitHub Gist, HIBP & More

We just shipped 11 third-party integrations that bring real formatting engines, live data feeds, interactive maps, and privacy-first breach checking to ToolBox â€” all without compromising on client-side security.

integrationsprettiergithubhibpgoogle fontsleafletnpm

integrationsgrammartranslatorgithublighthousewebhookgrowth

13 Growth Integrations: Grammar Checker, Translator, GitHub Tools & More

ToolBox now connects to Google PageSpeed, LanguageTool, MyMemory, GitHub APIs, Cloudflare DoH, and more. 13 new integrations bring grammar checking, translation, Lighthouse scores, webhook testing, and design token conversion to your browser.

toolsannouncementreactaccessibilitycssjsonimage

7 New Tools: Image Resizer, HTML to JSX, JSON Path Finder & More

We just shipped 7 brand-new tools: Image Resizer, HTML to JSX Converter, JSON Path Finder, Color Blindness Simulator, CSS Specificity Calculator, Barcode Generator, and JSON to XML Converter.

featuresannouncementproductivitydeveloper-tools

6 Unique Features No Other Tool Site Has

Tool Recipes, right-click context menu, split view mode, Explain This detector, snippets library, and offline mode badges â€” six features that set ToolBox apart from every other online tool collection.

February 15, 2026•26 min read

Smart Features That Make ToolBox Feel Like an IDE

Discover Smart Paste Detection, Workspace Scratchpad, Input History, and the Personal Stats Dashboard â€” four features that turn ToolBox into a productivity powerhouse.

smart-pasteworkspaceinput-historydashboardproductivity

cheat-sheetstypescriptpythonsqlmarkdownbashdockertailwind

7 New Cheat Sheets: TypeScript, Python, SQL, Markdown, Bash, Docker & Tailwind

Our cheat sheet collection just jumped to 12. Quick-reference guides for TypeScript, Python, SQL, Markdown, Bash, Docker, and Tailwind CSS are now live.

February 15, 2026•23 min read

Building Text Transformation Pipelines with Tool Chainer

A practical step-by-step guide to the Tool Chainer. Walk through a real pipeline, learn the 6 processor categories, and discover how to share and export your workflows.

tutorialtool-chainertext-processingautomationpipelines

new toolstool chainertext pipelinetext processingautomation

New: Tool Chainer â€” Build Text Transformation Pipelines

Chain 35+ text processors into reusable pipelines. Encode, decode, change case, format, hash, find & replace â€” all in one tool with live output at every step.

February 15, 2026•17 min read

5 New Tools: Regex Playground, JSON Schema Generator & More

We just added 5 powerful new tools â€” an advanced Regex Playground, JSON Schema Generator, Email Signature Generator, Git Commit Message Generator, and Tailwind Component Preview. Plus: homepage animations, testing infrastructure, and error boundaries.

new toolsregexjson schemaemail signaturetailwindtesting

February 10, 2025•19 min read

Introducing ToolBox: 30+ Free Online Tools

We built ToolBox to be the only toolkit you need. Every tool runs in your browser â€” no signups, no tracking, no limits.

launchannouncementtools

February 12, 2025•18 min read

Dark Mode, PWA Support, and 3 New Tools

We've added dark mode, PWA install support, and three new tools: JWT Decoder, Cron Parser, and Color Palette Generator.

updatedark-modepwanew-tools

February 12, 2025•20 min read

5 New Tools, Favorites, and Toast Notifications

Emoji Picker, SVG Optimizer, Crontab Generator, Tailwind to CSS, Placeholder Image Generator â€” plus favorites and clipboard toast notifications.

updatenew-toolsfavoritesux

February 12, 2025•19 min read

5 More Tools: Design Builders, Base Converter, and More

CSS Box Shadow Generator, CSS Gradient Generator, Markdown Table Generator, Number Base Converter, and Text to Binary â€” plus category badges and a polished 404 page.

updatenew-toolsdesignaccessibility

February 13, 2025•27 min read

10 New Tools: Pomodoro Timer, Chmod Calculator, and More

We just added 10 new tools bringing the total to 46 â€” including a Pomodoro Timer, Chmod Calculator, CSS Units Converter, IP Lookup, and more. Plus accessibility improvements.

updatenew-toolsaccessibilityproductivity

February 13, 2026•20 min read

5 Best Free JSON Tools Online (2025)

A practical guide to the best free JSON tools on the web â€” from formatting and validating to converting JSON to CSV and beyond.

guidejsondeveloper-tools

February 13, 2026•19 min read

How to Calculate Chmod Permissions (Easy Guide)

Learn how Unix file permissions work, what chmod numbers like 755 and 644 actually mean, and how to calculate them without memorizing octal codes.

tutoriallinuxdeveloper-tools

February 13, 2026•19 min read

CSS Units Explained: px vs rem vs em vs vw

A practical guide to CSS units â€” when to use px, rem, em, vw, vh, and percentages for responsive, accessible web design.

tutorialcssweb-development

February 13, 2026•16 min read

The Complete Guide to URL Slugs for SEO

Learn what URL slugs are, why they matter for search rankings, and best practices for creating clean, SEO-friendly URLs.

guideseoweb-development

February 14, 2026•18 min read

Base64 Encoding Explained: What It Is and When to Use It

Understand how Base64 encoding works, why it exists, and the real-world scenarios where you will encounter it as a developer.

tutorialencodingdeveloper-tools

February 14, 2026•26 min read

Password Security Best Practices for 2026

Why your 'complex' password might be weaker than you think, and what actually works to keep your accounts secure in 2026.

guidesecuritypasswords

February 14, 2026•20 min read

QR Codes: A Complete Guide for Developers and Marketers

How QR codes work under the hood, practical use cases beyond URLs, and best practices for generating scannable codes every time.

guideqr-codemarketing

February 14, 2026•19 min read

Markdown Tables Made Easy (Syntax, Tips, and Generator)

Master Markdown table syntax in minutes â€” with alignment tricks, common gotchas, and a visual generator for when you just want it done.

tutorialmarkdowndeveloper-tools

February 14, 2026•19 min read

Color Theory for Developers: A Practical Guide

Understand hex, RGB, and HSL color models, build harmonious palettes, meet accessibility contrast requirements, and handle dark mode like a pro.

guidedesigncoloraccessibility

February 14, 2026•27 min read

Client-Side vs Server-Side Tools: Why It Matters for Your Privacy

A practical comparison of client-side and server-side online tools â€” covering privacy, speed, offline use, and data breach risks.

guideprivacysecurity

February 14, 2026•24 min read

15 Best Free Developer Tools Online in 2026

A ranked guide to the most useful free online developer tools in 2026 â€” from JSON formatters to regex testers, all accessible from your browser.

guidedeveloper-toolsranking

February 14, 2026•23 min read

Online Tool Sites Compared: Finding the Right One

A framework for evaluating online tool sites â€” comparing all-in-one platforms, single-purpose tools, freemium services, and open-source options.

guidecomparisondeveloper-tools

comparisonjsondeveloper-tools

Best Free JSON Formatters Compared: ToolBox vs JSONLint vs Others (2026)

We compare the top free JSON formatting tools â€” JSONLint, JSON Editor Online, CodeBeautify, and ToolBox â€” across speed, privacy, features, and usability.

February 15, 2026•22 min read

Best Free Image Compressors Compared: ToolBox vs TinyPNG vs Squoosh (2026)

We compare the top free image compression tools â€” TinyPNG, Squoosh, iLoveIMG, and ToolBox â€” on compression quality, privacy, speed, and features.

comparisonimageweb-performance

comparisonregexdeveloper-tools

Best Free Regex Testers Compared: ToolBox vs Regex101 vs RegExr (2026)

We compare the top free regex testing tools â€” Regex101, RegExr, and ToolBox â€” on features, privacy, speed, and developer experience.

February 15, 2026•16 min read

Unix Timestamps Explained: What They Are and How to Convert Them

Learn what Unix timestamps are, why developers use them, and how to convert between timestamps and human-readable dates with practical examples.

tutorialtimestampdeveloper-tools

February 15, 2026•17 min read

JWT Tokens Explained: How They Work and How to Decode Them

Learn what JSON Web Tokens are, how they work for authentication, what the three parts mean, and how to decode and inspect them safely.

tutorialjwtsecuritydeveloper-tools