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Mermaid Online
Export Mermaid diagrams as polished images and PDFs
A free local-first Mermaid diagram exporter for PNG, SVG, JPG, WebP, and PDF. Create clean diagrams for README files, docs, slides, and blogs with presets, transparent backgrounds, and no watermark.
Hi Product Hunt,
I built Mermaid Online for people who use Mermaid diagrams in README files, technical docs, slides, and blog posts.
Mermaid is great for writing diagrams as code, but turning those diagrams into clean exported assets can be awkward. Screenshots are blurry, SVG/PDF export can be inconsistent, and many tools are either too heavy or require signup.
Mermaid Online lets you paste or edit Mermaid code, preview the diagram, choose an export style, and download PNG, SVG, JPG, WebP, or PDF. The workflow is local-first in the browser, so your diagram code is not uploaded. It is free, requires no signup, and adds no watermark.
I’d love feedback from developers, technical writers, educators, and anyone who uses Mermaid in documentation: what export workflow do you use most often, and what would make this more useful?
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About Mermaid Online on Product Hunt
“Export Mermaid diagrams as polished images and PDFs”
Mermaid Online was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #138 on the daily leaderboard. A free local-first Mermaid diagram exporter for PNG, SVG, JPG, WebP, and PDF. Create clean diagrams for README files, docs, slides, and blogs with presets, transparent backgrounds, and no watermark.
Mermaid Online was featured in Developer Tools (513.8k followers) on Product Hunt. Together, these topics include over 71.7k products, making this a competitive space to launch in.
Who hunted Mermaid Online?
Mermaid Online was hunted by river jiang. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Mermaid Online stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
river jiang