Run-length encoding (RLE)

Client

Classic run-length encoding for repeated characters—illustrates lossless compression ideas without binary file handling.

About Run-length encoding (RLE)

Compress repeated letters to counts (AAAB → 3A1B) or expand RLE back—client-side string toy. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

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Nearby workflows on Toolcore

  • Compress & minify — HTML, JS, CSS, XML, SQL, JSON minify; batch JPEG/WebP image compression. for the next text or markup step in your edit loop.
  • Text ↔ binary — Convert UTF-8 text to 0/1 bit strings and back—spaced bytes or continuous—in your browser. for the next text or markup step in your edit loop.
  • Character frequency — Count how often each character appears—sorted table with Unicode code points; local only. for the next text or markup step in your edit loop.
  • List converter — Convert lines ↔ JSON array ↔ CSV row—paste lists for configs, APIs, or spreadsheets; local only. for the next text or markup step in your edit loop.

Common use cases

  • Run-length encoding (RLE) for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.