Converters, encoders, and other small utilities.

Encode and decode Base64 text safely, including UTF-8.

Percent-encode and decode URL components and parameters.

Convert between text, hex strings, and byte arrays.

Encode text to HTML entities and decode them back, UTF-8 safe.

Inspect the header and payload of a JSON Web Token.

Beautify, minify, and validate JSON with error reporting.

Convert CSV rows to JSON objects and back, with preview.

Keep or remove CSV rows with a condition on one column — contains, equals, numeric ranges.

Keep only the columns you need from a CSV — pick them by header name.

Convert YAML to JSON and JSON to YAML, with validation.

Render Markdown to HTML with a live preview pane.

Minify HTML: strip comments, collapse whitespace, keep output valid.

Format and re-indent HTML: one tag per line, nesting made readable.

Convert HEX, RGB, HSL, and OKLCH color spaces.

Convert numbers between binary, octal, decimal, hex and any base 2–36.

Generate strong, configurable passwords in your browser.

Create RFC 4122 unique ids (v4 / v7) in bulk.

Compute SHA-1, SHA-256, SHA-384 and SHA-512 checksums of text.

Generate placeholder paragraphs, sentences and words.

Create QR codes from text or URLs — PNG and SVG export.

Swap between camelCase, snake_case, kebab-case and more.

Turn titles and text into clean URL slugs, line by line.

Sort or dedupe a list of lines — alphabetically, naturally, or by length.

Reverse the order of lines — or mirror the characters of each line.

Dedupe a list of lines — exact, case-insensitive, or whitespace-insensitive.

Unify mixed tabs and spaces — re-indent to 2/4/8 spaces or tabs.

Strip a prefix, suffix, or both from text — per line or across the whole input.

Add line numbers to any text — pick start, step, separator and alignment.

Clean messy whitespace — collapse space runs, trim line ends, squash blank-line runs.

Repeat any text N times — choose the count and the separator between copies.

Turn tab, comma, semicolon or pipe-separated text into a Markdown, ASCII, HTML or CSV table.

Compare two blocks of text and highlight the changes.

Test regular expressions against text with live matches.

Count words, characters, sentences and paragraphs — live as you type.

Break a URL into its protocol, host, path and query parts.

Inspect IPv4/IPv6 addresses, CIDR ranges, and notations.

Convert Unix epoch timestamps to human dates and back.

Explain, validate, and preview cron schedules with next run times.

Generate and compare bcrypt password hashes (client-side).

Compute HMAC signatures with several hash algorithms.

Combine multiple PDFs into one, in the order you choose.

Stamp page numbers onto every page of a PDF.

Delete pages from a PDF and download the trimmed result.

Rotate all or individual PDF pages by 90°, 180° or 270°.

Split a PDF by page ranges or into one file per page.

Stamp a text watermark across every page of a PDF.

Inspect a PDF: pages, metadata, and page sizes.

Extract the text layer of a PDF — all pages or a range, copy or download as .txt.

Convert PDF pages to PNG or JPEG images — all pages or a range, at 72–300 dpi.

Combine PNG and JPEG images into a single PDF — one image per page, fit or A4/Letter.

Rearrange PDF pages by dragging thumbnails — undo, reset, then download.