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Run-Length Encoder

Compression · Free Online Tool

RLE run-length encoding for data with repeated chars.

By EZ4Code TeamLast updated: 2026-10-29

Input Text179 chars

Encoded (Base64)

0 chars

Click "Encode" to run...

Count+Byte Pairs

Each run becomes a 1-byte count + 1-byte value. Runs longer than 255 split.

Great for Bitmaps

Excellent on images with flat regions, masks, and sparse binary data.

Base64 Transport

Output is base64-encoded so it survives copy/paste and text fields.

How to Use Run-Length Encoder

1Enter or paste the text you want to compress.
2Select the compression algorithm (gzip, deflate, or brotli).
3Click compress to reduce the data size.
4Copy or download the compressed output.

Features

✓100% free — no signup, no subscription, no ads
✓Runs entirely in your browser — data never leaves your device
✓Fast and lightweight — instant results
✓Cross-platform — works on desktop, tablet, and mobile

Frequently Asked Questions

What compression algorithms are supported?

We support gzip, deflate, and brotli compression algorithms for text data.

Is there a file size limit?

Since tools run in your browser, the limit depends on your device memory. Most tools handle several megabytes without issues.

Can I decompress data produced by other software?

Yes. The decompression tools accept standard gzip, deflate, and brotli streams from any compliant source — command-line tools, web servers, or other libraries.

Why does the compressed output look unreadable?

Compressed data is binary, not text. Use Copy as Base64 or download it as a file — pasting raw compressed bytes into a text field will show garbled characters.