Essential developer tools in one place. URL encode/decode, Base64 text conversion, and live Regex testing, all running locally in your browser.
Developer Utilities bundles the three encoders every developer reaches for daily, a URL encoder/decoder, a Base64 text converter, and a live regular-expression tester, into one fast, local-only page. There's no context-switching between tabs and nothing you paste is sent to a server.
Calibrating Developer Utilities......
Please wait a moment
URLs can only contain a limited set of characters, so spaces, ampersands, and other symbols must be percent-encoded to travel safely in a query string. Encoding before you build a URL, and decoding to read one, prevents broken links and mis-parsed parameters.
Switch between URL encode/decode, Base64 text, and the regex tester.
Enter the string, URL component, or pattern you want to work with.
Output updates as you type, matches highlight instantly in regex mode.
One-click copy the encoded, decoded, or matched result into your code.
Base64 turns arbitrary text into an ASCII-safe string that survives systems which mangle special characters. It's encoding, not encryption, anyone can decode it, so use it for transport, never to hide secrets.
A regular expression that looks right can still miss edge cases. The live tester lets you paste real sample data and watch matches highlight as you refine the pattern, so you catch mistakes before they reach production.
Paste your URL or string into the URL encoder. It automatically converts special characters (spaces, ampersands, equals signs) into percent-encoded format (e.g., space becomes %20) safe for use in URLs.
Paste your percent-encoded URL (e.g., hello%20world%3F) into the URL decoder. It converts it back to readable text (hello world?).
Enter your regex pattern and test string in the Regex tester. Matches highlight in real-time as you type. You can also see capture groups, global matches, and whether the pattern is valid.
Paste your text into the Base64 encoder. The tool instantly generates the Base64-encoded version. This is commonly used for encoding credentials in HTTP headers or encoding binary data in JSON.
URLs can only contain certain ASCII characters. Special characters like spaces, &, =, ?, and # have special meanings in URLs. URL encoding converts these to percent-encoded format so they're transmitted correctly in HTTP requests.
Paste the full URL or just the query string (e.g., ?name=John%20Doe&city=New%20York) into the URL decoder. It converts all percent-encoded characters back to readable text, making it easy to inspect API URLs, OAuth redirect parameters, or tracking query strings.
A collection of everyday utilities, JSON formatting, Base64, JWT decoding, hashing, timestamp and URL encoding and more, all in your browser so data never leaves your device.
Yes. Everything is processed locally in the browser, which makes it safe to work with real payloads, tokens and data.
Yes. All the utilities are free to use with no account required.
No. URL, Base64, and regex operations all run locally in your browser.
Yes: you can toggle common flags like global and case-insensitive and see matches update live.
Tool Guides
Tool GuidesOffline POS is a desktop point-of-sale built for real shops — fast catalogue, cash-drawer discipline, customer credit, inventory and reports, all stored locally on your own machine. Optional FBR invoice reporting is built in for Pakistani retail.
Tool GuidesPhotos carry hidden data like GPS location and camera details. Here's why that matters for privacy and how to strip it before sharing.