🧹 Sequence Cleaner

Sequence Cleaner

Remove spaces, line breaks, numbers, FASTA headers, and unwanted characters from copied DNA or protein sequences, and extract clean sequences ready for analysis. Sequence data is processed only within your browser.

📥 Sequence Input

Sequence Type

DNA / RNA Protein

Input characters: 0 FASTA candidates: 0 Current extraction target: A/T/G/C

⚙️ Cleaning Settings

Basic options

Keep FASTA headers Convert to uppercase Wrap at specified line width

Line width

DNA / RNA options

Convert U to T Allow IUPAC ambiguous bases (N, R, Y, etc.)

Protein options

Allow B/Z/X Keep stop symbol * Remove gap symbols - and .

📊 Cleaning Summary

🧬 Cleaned Sequence

🔎 Check Removed Characters

Original preview (red: removed)

Removed characters

🖥 Use the GeneQuick app for sequence design and restriction enzyme analysis

For GenBank viewing, plasmid maps, Sanger chromatogram checking, primer design, and more, please use the desktop app.

Free Download →