Developer tools without uploads
Format, encode, decode, validate, generate and inspect common developer data directly in your browser. No account and no server-side processing of your input.
Popular tools
JSON Formatter — Paste data and format or normalize it instantly in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Base64 Decode — Decode the value locally and inspect the result without uploading it. Processed locally in your browser. Your input is not uploaded to our server.
UUID v4 Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
Unix Timestamp Converter — Convert between common developer formats locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
JWT Decoder — Decode the value locally and inspect the result without uploading it. Processed locally in your browser. Your input is not uploaded to our server.
Regex Tester — Test a developer expression against local input in your browser. Processed locally in your browser. Your input is not uploaded to our server.
URL Encode — Encode text with a standard browser-side representation. Processed locally in your browser. Your input is not uploaded to our server.
SHA-256 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.
Cron Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
XML Formatter — Paste data and format or normalize it instantly in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Tool categories
Format, validate and convert structured data.
Base64, URL, HTML, Unicode and JWT helpers.
Generate and validate identifiers and secure random strings.
Calculate common text digests locally.
Parse URLs and look up HTTP or MIME references.
Test JavaScript regular expressions against local text.
Work with Unix timestamps and 5-field cron schedules.
Format and minify XML documents.
All developer tools
JSON Formatter — Paste data and format or normalize it instantly in your browser. Processed locally in your browser. Your input is not uploaded to our server.
JSON Validator — Check syntax or structure instantly without sending the value to a server. Processed locally in your browser. Your input is not uploaded to our server.
JSON Minifier — Paste data and format or normalize it instantly in your browser. Processed locally in your browser. Your input is not uploaded to our server.
JSON Escape — Escape or unescape developer text safely as data. Processed locally in your browser. Your input is not uploaded to our server.
JSON Unescape — Escape or unescape developer text safely as data. Processed locally in your browser. Your input is not uploaded to our server.
JSON to YAML — Convert between common developer formats locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
YAML to JSON — Convert between common developer formats locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
JSON to CSV — Convert between common developer formats locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
CSV to JSON — Convert between common developer formats locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Base64 Encode — Encode text with a standard browser-side representation. Processed locally in your browser. Your input is not uploaded to our server.
Base64 Decode — Decode the value locally and inspect the result without uploading it. Processed locally in your browser. Your input is not uploaded to our server.
Base64URL Encode — Encode text with a standard browser-side representation. Processed locally in your browser. Your input is not uploaded to our server.
Base64URL Decode — Decode the value locally and inspect the result without uploading it. Processed locally in your browser. Your input is not uploaded to our server.
URL Encode — Encode text with a standard browser-side representation. Processed locally in your browser. Your input is not uploaded to our server.
URL Decode — Decode the value locally and inspect the result without uploading it. Processed locally in your browser. Your input is not uploaded to our server.
HTML Escape — Escape or unescape developer text safely as data. Processed locally in your browser. Your input is not uploaded to our server.
HTML Unescape — Escape or unescape developer text safely as data. Processed locally in your browser. Your input is not uploaded to our server.
Unicode Escape / Unescape — Escape or unescape developer text safely as data. Processed locally in your browser. Your input is not uploaded to our server.
JWT Decoder — Decode the value locally and inspect the result without uploading it. Processed locally in your browser. Your input is not uploaded to our server.
UUID v4 Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
UUID Validator — Check syntax or structure instantly without sending the value to a server. Processed locally in your browser. Your input is not uploaded to our server.
ULID Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
Random String Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
Password Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
SHA-256 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.
SHA-384 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.
SHA-512 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.
SHA-1 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.
MD5 Hash — Calculate a digest locally in your browser. The input never leaves this page. Processed locally in your browser. Your input is not uploaded to our server.
Unix Timestamp Converter — Convert between common developer formats locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Current Unix Timestamp — Read the current value generated by your browser clock. Processed locally in your browser. Your input is not uploaded to our server.
URL Parser — Parse the input into useful fields locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Query String Parser — Parse the input into useful fields locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
HTTP Status Code Lookup — Look up a common developer reference value from the bundled local dataset. Processed locally in your browser. Your input is not uploaded to our server.
MIME Type Lookup — Look up a common developer reference value from the bundled local dataset. Processed locally in your browser. Your input is not uploaded to our server.
Regex Tester — Test a developer expression against local input in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Cron Expression Parser — Parse the input into useful fields locally in your browser. Processed locally in your browser. Your input is not uploaded to our server.
Cron Generator — Generate values locally using browser APIs and cryptographically secure randomness where required. Processed locally in your browser. Your input is not uploaded to our server.
XML Formatter — Paste data and format or normalize it instantly in your browser. Processed locally in your browser. Your input is not uploaded to our server.
XML Minifier — Paste data and format or normalize it instantly in your browser. Processed locally in your browser. Your input is not uploaded to our server.