JSON & Base64
Format and validate JSON, encode and decode Base64 and URLs.
JSON & Base64 list
JSON Formatter
Beautify, minify and validate JSON, with color highlighting and string ⇄ JSON conversion.
Base64 Encode
Encode text to Base64 (or URL-safe base64url) instantly, with full Unicode support.
Base64 Decode
Decode Base64 (standard or URL-safe) back to readable UTF-8 text, padding optional.
Image to Base64
Convert an image to a Base64 data URI, raw Base64, or a CSS background snippet.
Base64 to Image
Decode a Base64 string or data URI back into an image you can preview and download.
URL Encoder
Percent-encode text for safe use in URLs, query strings and forms — instantly and in your browser.
URL Decoder
Decode percent-encoded URLs and query strings back into readable text — fast and private.
URL Parser
Break any URL into its parts — protocol, host, port, path, query parameters and fragment.
URL Extractor
Pull every link out of any text, HTML or log — with optional dedupe and sorting.
JSON Validator
Check whether JSON is valid and pinpoint the error if it is not.
JSON Minifier
Compress JSON to a single line by stripping all whitespace.
JSON Pretty Print
Indent and beautify JSON with 2 spaces, 4 spaces or tabs.
JSON Escape / Unescape
Escape text into a JSON string literal, or unescape it back.
JSON Compare
Compare two JSON documents semantically and list every difference.
JSON Diff
See a line-by-line diff between two JSON documents.
JSON Viewer
Explore JSON as a collapsible, color-coded tree.
About JSON & Base64
This category bundles the everyday encoding and formatting tasks developers hit constantly: beautifying and validating JSON, encoding and decoding Base64, converting images to data URIs, and escaping URLs. Keeping them in one fast, ad-light place saves the context switching of hunting for a different site each time.
These utilities are built to respect your data. Everything runs locally in your browser, so the payloads, tokens and images you paste — often sensitive — never leave your machine.
Bookmark this category as your everyday JSON and Base64 toolbox. As your workflow grows, the related links surface adjacent tools you might not have known existed.
Frequently asked questions
- Do these tools send my data to a server?
- No. The JSON, Base64 and URL tools all run in your browser, which matters when you are working with tokens, payloads or private images.