Fast Web Tools. Private On Your Device.
FreeToolsBox is a collection of free browser tools for PDFs, images, text, code and calculations. Tool files and inputs are processed on your device. No account or installation is required.
0ms Network Lag
Executes in your browser
Zero Uploads
Files stay in your device RAM
Offline Capable
Works even without Wi-Fi
Zero Signups
No accounts or paywalls
Image SEO Studio: Image Optimization & SEO
Resize and compress images in your browser, generate responsive <picture> HTML, write ALT text from your topic and keywords, and export an image sitemap and ZIP. Your images stay on your device.
Most Popular Everyday Tools
Frequently used utilities for rapid file tasks, calculations, and conversions
Word & Character Counter
Count words, characters, sentences, paragraphs, reading time, and speaking time in real time.
Case Converter
Transform text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, kebab-case, and snake_case.
Text Diff Checker
Compare two text snippets side-by-side to highlight differences, additions, and deletions instantly.
Image Compressor
Compress PNG, JPEG, and WebP images in-browser with adjustable quality and instant size comparison.
Image Resizer
Resize image dimensions by width, height, percentage, or social media presets with aspect ratio lock.
Image Format Converter
Convert images seamlessly between PNG, JPG, WebP, BMP, and GIF formats in seconds.
PDF Merger
Combine multiple PDF documents into a single unified file in your browser without uploading to any server.
JSON Formatter & Validator
Format, beautify, validate, and minify JSON data with line numbers and exact syntax error diagnostics.
Browse by Functional Category
Explore specialized categories built for developer workflows, document transformations, privacy, and health.
Text & Writing
Format, count, clean, and manipulate text in seconds.
File & Image Tools
Compress, resize, convert, and crop images directly in your browser.
Developer Tools
JSON formatters, minifiers, encoders, and regex testers.
Business & Finance
Invoicing, loan EMI, profit margins, and currency calculators.
Design & Freelance
CSS gradients, box shadows, color palettes, and aspect ratios.
Everyday Utility
Unit converters, time differences, timers, and picker wheels.
PDF Converters
Merge, split, rotate, and convert PDF documents in-browser.
QR & Barcode
Generate and scan custom QR codes and standard barcodes.
Security & Auth
Cryptographically secure password generators, 2FA TOTP, and ciphers.
Health & Calculators
BMI, body fat, pregnancy due date, sleep cycles, and animal age.
Why In-Browser Execution Matters
Most online tool websites upload your files, passwords, and private text to remote cloud servers. FreeToolsBox runs all logic directly on your local device.
Files Stay in Your RAM
PDFs, photos, passwords, and financial data never leave your computer. When you close the tab, the memory is instantly cleared.
Instant Speed, Zero Queues
Because operations run locally on your device hardware, there are no upload progress bars, server wait queues, or network slowdowns.
Zero Dark Patterns
No mandatory account creation, no email traps, no hidden subscription tiers, and no watermarks on downloaded files.