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Developers reach for the same small utilities every day: format and validate JSON, encode or decode Base64, escape a URL parameter, generate a UUID or turn a Unix timestamp into a date. These free online tools do each of them in one step.
Everything runs in your browser, so private payloads, tokens and logs are never uploaded. Each tool reports clear errors, supports Unicode and links to a short guide that explains the format and its common pitfalls.
Validate, pretty-print or minify JSON right in your browser.
Open tool →Encode text to Base64 or decode Base64 back to text.
Open tool →Generate a random UUID v4 in your browser.
Open tool →Encode text for safe use inside a URL, or decode percent-encoded text.
Open tool →Convert a Unix timestamp into an ISO date.
Open tool →Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case and more.
Open tool →Generate strong random passwords with the length and character types you choose.
Open tool →Generate lorem ipsum placeholder text by paragraphs, sentences or words.
Open tool →No. The tools run entirely in your browser, so the text you paste is not sent to our servers.
Yes. If the JSON is invalid, the error message reports the first problem and its position so you can fix it quickly.
No. Base64 is an encoding, not encryption, and anyone can decode it. Use proper encryption for secrets.