An online toolbox that just worksFiles never leave your browser
Every tool runs locally, so images are never uploaded to a server. No sign-up, no usage limits - open the page and start working.
All tools
Pick a tool to get started - each one ships with full usage instructions and an FAQ.
Image Compressor
Compress JPEG / PNG / WebP locally in your browser
Image Format Converter
Convert between JPEG / PNG / WebP in your browser
JSON Formatter
Format, minify and validate JSON online
Base64 Encoder / Decoder
Convert text and files to and from Base64, with CJK and URL-safe support
Timestamp Converter
Convert Unix timestamps to dates, auto-detecting seconds, milliseconds and microseconds
URL Encoder / Decoder
Encode and decode URLs, with structure breakdown and query parsing
Hash Calculator
MD5, SHA-1, SHA-256, SHA-384 and SHA-512 in one pass
Text Statistics
Live character, word, paragraph and reading-time counts, plus text cleanup
Colour Converter
HEX / RGB / HSL / HSV conversion with shades, palettes and contrast advice
UUID Generator
Batch-generate UUID v4 / v7 with hyphen removal, uppercase and validation
Regex Tester
Live match highlighting, group inspection and replace preview, with risk warnings
Cron Parser
Parse a Cron expression, compute the next 5 run times and explain it in words
HTML Entities
Escape and unescape HTML entities in named, decimal and hex forms
JWT Decoder
Inspect Header and Payload, expiry status and claim meanings
Text Diff
Compare two blocks of text line by line, with inline highlighting
URL Parser
Break a URL into its parts and detect UTM campaign parameters
Markdown Converter
Convert between Markdown and HTML, with live preview
Unit Converter
Storage, time, length, weight, temperature and speed conversions
Password Generator
Generate strong passwords with cryptographically secure randomness
CSV ↔ JSON
Convert between spreadsheet data and JSON, with delimiter detection
Image Crop & Resize
Crop and resize images locally, with circle and ratio presets
QR Code Generator
Turn text, URLs or WiFi details into a QR code
Text Encryption
AES-GCM encryption plus classical ciphers, all local
Lorem Ipsum Generator
Generate Latin or Chinese placeholder text, with optional HTML tags
Image EXIF Viewer & Remover
Inspect what your photos reveal, then strip the GPS coordinates
PDF Merge & Split
Combine several PDFs into one, or break one into many
JSON to Excel
Turn a JSON array into an xlsx spreadsheet that just opens
XML ⇄ JSON Converter
Convert both ways, with the mapping rules under your control
YAML ⇄ JSON Converter
Convert config formats, with the counter-intuitive rules made explicit
Why ourtool
What a tool site should be: get the job done instead of taking your data.
No uploads
Processing happens inside the browser, so images never leave your device - it even works offline.
Instant to use
No server queue and no upload wait; large images are compressed using browser worker threads.
Tunable output
Quality, size limits and output format are all adjustable - redo it instantly if needed.
Free, no limits
No file size or usage caps, no sign-up walls, and no watermark added to your files.
Three steps
No tutorial to read, no software to install.
- 1
Pick a tool
Find the tool you need on the home page and open it - no registration required.
- 2
Add your file
Click to upload or drag the file in, tweak the options, then start processing.
- 3
Get the result
Preview the before/after comparison, then download it once you are happy.
Start using it
Every tool is free and unlimited, and processing stays on your device.