Virtual Text Tools
Virtual Text Tools
A growing suite of fast, no-signup developer utilities. Format JSON, encode and decode Base64 and URLs, compare two versions of a file and generate hashes, all processed locally in your browser. No uploads, no accounts, no limits.
Developers reach for small utilities constantly: format a JSON blob to read it, decode a Base64 token to see what is inside, encode a string for a URL. The problem with most online options is the trade-off they force — either create an account, tolerate ads and upsells, or upload your data to someone else's server to have it processed.
Virtual Text Tools removes that trade-off. Every tool runs as JavaScript in your own browser using native web APIs like JSON.parse, TextEncoder, and the Web Crypto API. There is no backend, no account, and nothing is transmitted. That makes these tools both instant — no server round trip — and private by default.
The JSON formatter beautifies unreadable single-line JSON into clean, indented structure, or minifies it back down for production. It validates as you go, pointing to the exact position of any syntax error — trailing commas, missing quotes, unclosed brackets. Full walkthrough in the JSON formatter guide.
The Base64 tool encodes text to Base64 and decodes it back, with proper UTF-8 handling so emoji and non-Latin scripts round-trip correctly — something many tools built on raw btoa() get wrong. It includes a URL-safe variant for decoding JWTs and URL parameters. See the Base64 guide for the full explanation, including why Base64 is encoding and not encryption.
The URL encoder percent-encodes text so it is safe to drop into a URL, and decodes encoded URLs back to readable text. Useful whenever you are building query strings or inspecting links. More in the URL encoder guide.
The text diff checker compares two versions of a file or document line by line and marks every added and removed line. It matches lines with a longest-common-subsequence algorithm, so one inserted line shows up as one change instead of throwing off everything below it. Ignore-whitespace and ignore-case options hide formatting-only differences.
The hash generator produces MD5, SHA-1, SHA-256 and SHA-512 digests as you type. The SHA hashes come from the browser's Web Crypto API, so the text you hash stays on your device. Its guide also covers why a hash might not match the one you expected, and why a plain hash is the wrong way to store passwords.
Free, no account, nothing uploaded. Jump straight into any tool.
Open all tools →Yes — completely free, no account, no signup, no usage limits. Because everything runs in your browser there is no server cost, so there is nothing to charge for.
With most tools, no — they upload your data to be processed. These tools process everything locally in your browser, so your data never leaves your device. That makes them safe for sensitive material like auth tokens and credentials.
Once the page has loaded, yes. All processing is local JavaScript, so you can disconnect from the internet and the tools keep working.
Beyond developer tools, there is a full suite of text and image utilities — word and character counters, case converters, a QR generator, image conversion and compression, and more. See the full comparison of all the tools or browse every tool.