Free Tools.Zero Uploads.
Fast browser utilities for images, video, audio & developers. Your files stay on your device.
Popular Local Tools
Image Compressor
Compress JPG, PNG, and WebP locally with adjustable quality.
Image Resizer
Resize images by pixels or percentage with aspect ratio lock.
JPG to PNG Converter
Convert JPG to PNG format without additional compression artifacts.
PNG to JPG Converter
Convert PNG to JPG with custom background color for transparency.
JPG to WebP Converter
Convert JPG to modern WebP format for smaller file sizes.
HEIC to JPG Converter
Convert Apple iPhone HEIC photos to JPG locally.
Image Tools
Compress, resize, crop, and convert images directly in your browser with Canvas.
Image Compressor
Compress JPG, PNG, and WebP locally with adjustable quality.
Image Resizer
Resize images by pixels or percentage with aspect ratio lock.
Image Cropper
Crop photos interactively with preset and custom aspect ratios.
JPG to PNG Converter
Convert JPG to PNG format without additional compression artifacts.
PNG to JPG Converter
Convert PNG to JPG with custom background color for transparency.
JPG to WebP Converter
Convert JPG to modern WebP format for smaller file sizes.
WebP to JPG Converter
Convert WebP to widely compatible JPG format.
HEIC to JPG Converter
Convert Apple iPhone HEIC photos to JPG locally.
SVG to PNG Converter
Render vector SVG graphics to high-res PNG rasters.
Image to Base64 Converter
Encode images into Base64 strings, Data URLs, and HTML/CSS snippets.
Video & Audio
Convert, compress, and extract media in your browser using FFmpeg WebAssembly.
MP4 to MP3 Converter
Extract audio from MP4 video directly in your browser.
MOV to MP4 Converter
Convert Apple QuickTime MOV videos to standard MP4.
MKV to MP4 Converter
Convert Matroska (.mkv) video containers to MP4.
WebM to MP4 Converter
Convert WebM videos and screen recordings to MP4.
Video Compressor
Compress video file size using local FFmpeg WASM presets.
Video to GIF Converter
Convert MP4 and WebM videos to animated GIFs.
Audio Format Converter
Convert between MP3, WAV, AAC, OGG, and FLAC locally.
Developer Tools
Format, validate, encode, and inspect data securely without sending tokens or payloads to any server.
JSON Formatter
Beautify and format JSON with indentation and syntax validation.
JSON Validator
Validate JSON syntax with precise line & column error detection.
JSON Minifier
Compress JSON by stripping all whitespace and line breaks.
JSON to YAML Converter
Convert between JSON and YAML configuration formats.
JSON to TypeScript Converter
Generate TypeScript interfaces and types from JSON objects.
Base64 Encoder / Decoder
Encode and decode text strings and files to/from Base64.
URL Encoder / Decoder
Encode and decode URLs and query string parameters.
JWT Decoder
Decode and inspect JWT headers, claims, and expiry dates privately.
UUID Generator
Generate cryptographically random UUIDs in bulk with format options.
Unix Timestamp Converter
Convert Unix timestamps (seconds & ms) to human dates.
Utility Tools
Generate QR codes, secure passwords, and compare text diffs in real time.
QR Code Generator
Generate custom QR codes with custom colors and high-res download.
Password Generator
Generate cryptographically strong passwords with custom rules.
Text Diff Checker
Compare two text snippets side-by-side with color diff highlights.
How Local Processing Works
Most conversion websites upload your files to external cloud servers. NovaTool executes entirely inside your browser.
Data Stays In RAM
When you drop a file, your browser loads the binary buffer directly into tab memory. Zero network payloads are created or sent.
WASM & Canvas Engines
Media tasks run local FFmpeg WebAssembly. Images transform on hardware-accelerated Canvas. Developer tools run native parsers.
Direct Disk Output
Output blobs are generated locally and written straight to your downloads folder. RAM is revoked and cleared immediately.