Free online tools that work in seconds

View, format, validate, edit and beautify JSON with an interactive tree view, plus a shareable link.

Combine multiple PDF files into a single document.

Reduce PDF file size — rasterize pages, or recompress images while keeping text selectable.

Reduce image file size while controlling quality — one image or a whole batch.

Convert images between JPG, PNG, WebP and AVIF — in batches, with quality control.

Calculate your monthly EMI, full amortization schedule, and part-payment or foreclosure savings.

View, format, validate, edit and beautify JSON with an interactive tree view, plus a shareable link.

Validate JSON syntax and pinpoint errors instantly.

Decode JWT headers and payloads, and verify HMAC signatures with a secret.

Generate MD5, SHA-1, SHA-256 and SHA-512 hashes, in hex or Base64, with a compare mode.

Test regular expressions against sample text, with live matches, a replace mode, and Python/PCRE syntax support.

Combine multiple PDF files into a single document.

Split a PDF into separate files by page range, one file per page, or a maximum file size.

Reduce PDF file size — rasterize pages, or recompress images while keeping text selectable.

Adjust brightness and contrast together, in one pass, with a live preview.

Shift an image's colours around the colour wheel, with a live preview.

See the actual live meta tags on any public page — title, description, Open Graph, Twitter Card and more.

Build a frosted-glass CSS panel visually — tint, blur and border, with a live preview.

Strip comments and collapse whitespace to compress SQL.

Compress HTML by stripping comments and whitespace.

Compress JavaScript with real minification, not just whitespace removal.

Compress CSS by removing dead rules, comments and whitespace.

View, format, validate, edit and beautify JSON with an interactive tree view, plus a shareable link.

Validate JSON syntax and pinpoint errors instantly.

Strip whitespace to compress JSON to its smallest size.

Decode JWT headers and payloads, and verify HMAC signatures with a secret.

Encode text to standard or URL-safe Base64.

Decode Base64 strings back to text, images or files — including JWTs and data URIs.

Percent-encode text for safe use in URLs, with a component vs. full-URL mode.

Decode percent-encoded URLs back to plain text — automatically unwraps multiple layers.

Write GitHub-Flavoured Markdown with a live side-by-side preview and local auto-save.

Paste Markdown and get an instant rendered preview.

Edit HTML and see it rendered live in a sandboxed preview, with a console panel.

Reduce image file size while controlling quality — one image or a whole batch.

Resize images to exact pixel dimensions or a percentage — one image or a whole batch.

Crop an image to a custom or preset aspect ratio.

Convert images between JPG, PNG, WebP and AVIF — in batches, with quality control.

Rotate, flip, adjust, filter, blur and border an image with full undo/redo.

Rotate images by 90°, any custom angle, or flip them — one or many at once.

Strip EXIF, GPS and all other metadata from images — one or a whole batch.

Resize one image to Instagram, Facebook, X, LinkedIn, YouTube, TikTok and Pinterest sizes at once, including Reels/Shorts covers.

Combine multiple PDF files into a single document.

Split a PDF into separate files by page range, one file per page, or a maximum file size.

Reduce PDF file size — rasterize pages, or recompress images while keeping text selectable.

Convert each PDF page into a JPG image — download them one by one or as a zip.

Convert each PDF page into a lossless PNG image.

Combine JPG and PNG images into one PDF — one image per page, in the order you choose.

Rotate one or all pages of a PDF.

Reorder, rotate and delete pages from a visual grid.

Calculate your monthly EMI, full amortization schedule, and part-payment or foreclosure savings.

Compare loan repayment options, and see how an extra payment speeds up payoff.

Project the future value of monthly SIP investments, or compare against a lumpsum.

Project the future value of a one-time investment, with an optional inflation adjustment.

Calculate the Compound Annual Growth Rate of an investment.

Calculate annualized returns for irregular cash flows, with a quick-fill mode for recurring investments.

Calculate compound interest with configurable compounding frequency and optional regular contributions.

Solve for interest, principal, rate or time — in years, months or days.