309+ free tools that run entirely in your browser
Explore a comprehensive directory of over 309 free online tools for text editing, media conversion, image optimization, developer utilities, and everyday calculations. Built to run entirely in your browser, each tool processes files and data directly on your device without server-side computation.
Popular tools
High-utility daily essentialsCount words, characters, sentences and paragraphs instantly.
Reduce image file size while controlling quality and output format.
Add or remove GST from an amount, with category-based rates and a CGST/SGST/IGST split.
Format and beautify JSON with adjustable indentation.
Convert audio between MP3, WAV, AAC, FLAC, OGG and M4A — free, in your browser.
Convert video between MP4, WebM, MOV, AVI, MKV, 3GP, FLV, WMV and GIF — free, in your browser.
Combine multiple PDF files into one.
Record your screen, a window, or a browser tab.
Count characters with and without spaces.
Resize images by width, height or percentage with aspect ratio lock.
Calculate loan EMI for flat or reducing-balance interest with amortization charts.
Encode text into Base64.
Reduce audio file size by lowering bitrate.
Trim a video to a chosen start and end time.
Extract pages or page ranges from a PDF.
Record video from your webcam and microphone.
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Organized by workflowWhy choose in-browser tools?
Traditional web converters and calculators upload your confidential files, images, and numbers to remote servers for cloud processing. BrowserTools takes a privacy-first approach by executing every calculation and file transformation directly inside your local web browser.
Client-Side Processing & Privacy
Your documents, calculations, media files, and inputs are processed locally in your web browser. Because operations execute in browser memory on your device, your files are not uploaded to our servers or stored in remote databases.
Instant Speed & Offline Ready
Without the latency of uploading large files and downloading converted results, operations execute in milliseconds. Many utilities continue to function seamlessly even when you are offline or have an unstable connection.
Built on Modern Web Standards
We leverage open standards including the W3C Web Cryptography API, WebAssembly, and the MDN Canvas API to deliver desktop-grade utilities directly inside your browser tab.