Free, simple online tools for developers and casual users alike.
Compare two pieces of text and highlight the differences.
Replace multiple text strings or extract data from a block of content at once.
Process text line by line with 12 powerful operations.
Count characters, words, and lines in a text block.
Convert letter case and programming names instantly, preserve selected words, and return to your last chosen format.
Convert Chinese text between Simplified and Traditional scripts, detect the current script, and choose the output format you need.
Convert Chinese characters to Pinyin with multi-character word matching, using pinyin dictionary from Switch Traditional Chinese and Simplified Chinese script.
Upload multiple images and merge them into a single PDF file.
Create animated GIFs from multiple images with per-frame control.
Upload an image and generate multiple resized versions.
Create animated avatars from photos with various effects.
Extract colors from images, supporting HEX, RGB, HSL and other formats.
Split images into custom grids. Ideal for social media, puzzles, and Gemini Nano Banana Pro emoji packs.
Remove watermarks with AI inpainting, brush masks, rectangle selection, zoom, and pan.
Remove the visible Gemini watermark with a mathematically precise reverse alpha blending workflow.
AI batch cutout for transparent PNG and custom background color output.
Extract text from images locally using AI.
Upscale and enhance images locally with AI super resolution models.
Turn images into clean pixel art assets with batch ZIP export.
Convert text characters to their Unicode representations.
Encode text to Base64 or decode from it.
Encode text to Base16/Base32/Base45/Base58/Base62/Base65/Base85/Base91 or decode back to text.
Encode or decode special characters in URLs.
Encode and decode HTML entities like and <.
Translate text and Morse code, decode images and audio, and practise with playback, highlighting, flashes and keyboard tapping.
Decode JSON Web Tokens to inspect their payload.
Convert ASS/SSA subtitles to SRT format.
Convert between Unix timestamps and human-readable dates.
Convert colors between HEX, RGB, and HSL formats.
Trim audio by waveform or time, apply fades, volume, speed and pitch changes, then preview the processed clip before downloading.
Convert video clips to high-quality GIFs with precise frame control.
Convert WEBP images to GIF format, with support for animations.
Convert images to ICO format.
Validate and format your JSON code to ensure it is correct.
Test your regular expressions with this online tool.
Write Markdown and see a live preview.
Highlight source code, choose a theme and preview font size, then paste formatted code into Word or download a JPG.
Convert images to Base64 strings.
Convert SVG icons or code into Base64 data URLs.
Parse SVG paths, edit control points, and export optimized SVG.
Generate ASCII art from text or images using various fonts and sizes.
Create a QR code from a URL or text.
Scan and decode QR codes from images or camera.
Generate various hashes like MD5, SHA-256 from text.
Generate random strings with customizable length and character options.
Build and validate four Cron dialects, configure special calendar rules, and preview the next five runs in your local timezone.
Generate prompts for divination to ask AI models.
Test HTTP API requests directly from your browser. Customize URL, method, headers, body, and view full response details.
Encrypt and decrypt text using symmetric algorithms like AES.
Shift letters by a fixed number to encode or decode messages with the Caesar cipher.
Encode or decode text using the Rail Fence zigzag transposition.
A tool for encrypting and decrypting text using the Baijiaxing (Hundred Family Surnames) cipher.
Encrypt text into kaomoji strings or decode them back using an optional key.
Calculate sum, count, average, max, min, and median of a list of numbers.
Fast mathematical expression calculator with support for symbolic variables, smart symbol conversion, and history.
A simple scoreboard to keep score.
Use multiple countdowns, stopwatch laps and a date countdown, with sequence and loop modes, full screen, sound and optional system notifications.
Open multiple URLs at once.
An online wheel picker with custom probabilities, multiple wheels, list imports and draw rounds.
Browse and copy emojis organized by categories with instant search.
Extract files from ZIP archives directly in your browser.
Create ZIP archives from files and folders directly in your browser.
Record your screen, window, or tab with audio.
Play M3U8 streaming files.
A 3D Christmas tree where you can hang your photos.