FreeToolGrid
Developer tools
Free browser-based developer tools that run without an account.
JSON Formatter
Format and indent valid JSON.
Open toolJSON Validator
Validate JSON and show parsing errors.
Open toolBase64 Encoder Decoder
Encode or decode Base64 text locally.
Open toolURL Encoder Decoder
Encode or decode URL text safely.
Open toolUUID Generator
Generate UUID v4 identifiers in your browser.
Open toolSHA-256 Generator
Create a SHA-256 hash from text locally.
Open toolJWT Decoder
Decode the readable header and payload of a JWT.
Open toolRegex Tester
Test a regular expression against text.
Open toolHTML Entity Encoder
Encode or decode common HTML entities.
Open toolUUID Bulk Generator
Generate multiple UUID v4 values at once.
Open toolCron Generator
Generate a basic cron expression from common schedules.
Open tool