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Run-Length Encode

Compresses repeated characters into count-character run-length pairs. Free, instant and 100% private in your browser.

Encoders & Decoders Runs in your browser

What does Run-Length Encode do?

Compresses repeated characters into count-character run-length pairs. Paste your text on the left and NMSnabbit instantly shows the rle encoded on the right. Everything runs locally in your browser — nothing is uploaded, so it stays private and works offline. You can process several values at once and copy the result with one click.

How to use the Run-Length Encode

  1. 1 Type or paste your text into the input box.
  2. 2 The rle encoded appears instantly in the output box as you type.
  3. 3 Enter several values separated by spaces or new lines to process them at once.
  4. 4 Click “Copy output” to copy the result.

What you can use it for

  • Quickly compresses repeated characters into count-character run-length pairs without installing anything.
  • Checking results while learning or teaching how text and rle encoded relate.
  • Preparing or debugging data for programming, electronics or homework.
  • Working privately when the data shouldn't be uploaded to a server.

Frequently asked questions

How do I use Run-Length Encode?
Paste your text into the input field above. Run-Length Encode runs instantly in your browser and shows the rle encoded on the right — no button to press and nothing uploaded.
Is Run-Length Encode free and private?
Yes. Run-Length Encode is completely free with no sign-up, and it runs entirely client-side in your browser, so your data never leaves your device.
Can I process more than one value at once?
Yes. Enter several values separated by spaces or new lines and each one is handled independently, so you can batch-process in a single pass.

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