Sequence Logo Maker

About the tool

Use this tool to create pretty sequence logo diagrams for sequence alignments. It supports protein and nucleic acid sequences, and you can save the result as EPS, PDF, or SVG.

The diagrams are generated entirely in the browser so your data stays private and is not sent to the server.


Paste the alignment in the FASTA format.
Formatting options
You can save the result as EPS, PDF, or SVG.

What are sequence logos?

Sequence logos are a graphical representation of multiple sequence alignments, commonly used in bioinformatics to visualize and analyze conserved patterns within DNA, RNA, or protein sequences.


This project combines my passion for data visualization/vector graphics and wanting to support scientific discovery.

I hope that this Sequence Logo Maker can really make a difference by providing a modern, interactive, and user-friendly way for bioinformaticians to generate and analyze sequence logos. I personally find some of the existing and established tools to be quite cumbersome or outright annoying to use, so I've put an extra emphasis on making this one as simple and intuitive as possible.

How does it work?

There are multiple components that make up this tool:

All the processing is done in web workers to avoid blocking the main thread and to keep the UI responsive.

See also

Learn about the FASTA format and its applications.
FASTA, bioinformatics
Convert FASTQ files to FASTA format.
FASTQ, FASTA, bioinformatics
Open FASTA files in the browser.
bioinformatics, FASTA
Edit PDB files online.
bioinformatics, PDB, editors
An overview of the collaboratively edited structured pathway encyclopedia.
A WASM port of the MUSCLE sequence alignment tool.
MUSCLE, WASM, bioinformatics
A tool to generate plasmid maps from GenBank files.
An outline of the structure of the Gene Ontology RDF graph and ways to query it.
bioinformatics, RDF, ontologies
How progressive alignment makes it possible to efficiently align hundreds to thousands of large genomes.
A WASM port of MrBayes.
MrBayes, WASM, bioinformatics
Generating a complete human genome sequence, chromosome by chromosome.
bioinformatics, genomics
Explore the human genome.
bioinformatics, genomics

Made by Anton Vasetenkov.

If you want to say hi, you can reach me on LinkedIn or via email. If you like my work, you can support me by buying me a coffee.