ProToolBox

URL Encoder — Percent-Encode Text for Query Strings & APIs

Paste plain text—get encodeURIComponent output, live length, % escape count, optional Live, and one-tap copy. Runs only in your browser—no upload, no signup, no watermark.

URL encode text online

Encode query values, OAuth state, and redirect params so special characters survive HTTP and JSON.

1 Paste · 2 Encode · 3 Copy

Plain text input

Encoded output

Try . Reverse? URL decoder. Split links? URL parser · Base64.

Runs in this tab only—no server upload, no signup, no watermark.

Paste any string—we show output length, percent-escapes, and Δ length.

What you will see: A percent-encoded string safe for query values and components. Next: Encode or keep Live on, then Copy encoded.

Encoded output appears here

Paste text or tap sample.

Next: Copy encoded into Postman, fetch URLs, or server logs. Turn off Live for huge pastes. Encoding the whole URL at once differs from encoding each query key/value—split when your framework expects it. · All tools

  • Works in your browser—runs on your device, not our servers
  • No upload required—your input stays in this tab
  • Free and instant
  • No account needed
  • Private by default—the same ProToolbox promise on every page

What this is for

URL Encoder — Percent-Encode Text for Query Strings & APIs helps you format, validate, and encode before paste: works in your browser, no account needed. JSON, YAML, Base64, URLs, escapes—check here first, then ship to PRs, Slack, or configs.

  • Re-validate after every payload edit
  • Copy from the panel—nothing leaves your device until you do
  • Local run for tokens and internal data
  • Green here, then paste into production paths

Security: Fast correctness pass only—secrets still go through your team’s review.

Why percent-encode

Browsers and servers expect reserved characters to be escaped inside query strings and URI components. Doing it locally keeps tokens and UTM drafts off third-party sites.

How it works

  1. Paste the value you need encoded (often one parameter, not the full URL).
  2. Click Encode or keep Live on.
  3. Read the stats bar for length, escape count, and growth vs input.
  4. Copy encoded or verify with URL decoder.

FAQ

  • Encode an entire URL? Often you should encode components (path segments or query values), not the full string—otherwise slashes and colons get escaped too.
  • UTF-8 and emoji? Non-ASCII becomes percent-encoded UTF-8 bytes, matching modern runtimes.
  • Huge payloads? Turn off Live for very large pastes to keep the tab responsive.

Bookmark this page for every redirect, UTM tweak, and API query—encoding is one paste away.

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