Is my text or logo uploaded to a server?

No. The text is encoded locally by the qrcode npm package and the logo is read with FileReader and composited onto a Canvas. No network traffic is generated.

Which error-correction level should I pick?

M (~15%) is fine without a logo. With a logo overlay, choose H (~30%) so the QR can still be decoded where the logo covers it. Raising the level packs more modules in (higher version) and reduces the maximum payload.

How large can the logo be?

Keep the logo within 25% of the QR width. The slider here lets you pick 5% to 30%. Going larger can defeat even EC level H and produce an unreadable code.

Can I embed the logo into the SVG too?

Yes. The logo is inlined into the QR SVG as an element with a DataURL (no external reference), so the resulting file is self-contained and opens cleanly in Illustrator / Inkscape.

PNG vs SVG — which should I use?

PNG is the safest bet for printing, web sharing, and quick copy/paste. SVG is vector, so it scales without quality loss — ideal when the QR may be printed at different sizes (business cards, posters, signage). SVG files are often smaller too.

What is the character limit?

Roughly 4,296 alphanumeric chars / 2,953 UTF-8 bytes at EC level L, down to about 1,852 chars / 1,273 bytes at level H. Shorten long URLs or lower the EC level if you hit the limit.

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QR code generator — text / URL / with logo

Convert text or URLs into QR codes (PNG / SVG). Fine-tune size, error correction level, foreground / background colors, and optionally overlay a logo (PNG / JPG / SVG) in the center. Use error correction H when adding a logo. Generation and image compositing run entirely inside your browser — neither the input text nor your uploaded logo ever leaves your device.

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How to use

Start typing a text or URL — the QR refreshes automatically while you type. Tune the output format (PNG / SVG), error-correction level (L / M / Q / H), size, margin, foreground / background colors. To overlay a logo, click Choose logo and pick a PNG / JPG / SVG (read locally via FileReader). Pair the logo with EC level H and keep the logo scale at 25% or below for reliable scanning. Export the result as PNG / SVG or copy it straight to the clipboard.

FAQ

Is my text or logo uploaded to a server?: No. The text is encoded locally by the qrcode npm package and the logo is read with FileReader and composited onto a Canvas. No network traffic is generated.
Which error-correction level should I pick?: M (~15%) is fine without a logo. With a logo overlay, choose H (~30%) so the QR can still be decoded where the logo covers it. Raising the level packs more modules in (higher version) and reduces the maximum payload.
How large can the logo be?: Keep the logo within 25% of the QR width. The slider here lets you pick 5% to 30%. Going larger can defeat even EC level H and produce an unreadable code.
Can I embed the logo into the SVG too?: Yes. The logo is inlined into the QR SVG as an <image> element with a DataURL (no external reference), so the resulting file is self-contained and opens cleanly in Illustrator / Inkscape.
PNG vs SVG — which should I use?: PNG is the safest bet for printing, web sharing, and quick copy/paste. SVG is vector, so it scales without quality loss — ideal when the QR may be printed at different sizes (business cards, posters, signage). SVG files are often smaller too.
What is the character limit?: Roughly 4,296 alphanumeric chars / 2,953 UTF-8 bytes at EC level L, down to about 1,852 chars / 1,273 bytes at level H. Shorten long URLs or lower the EC level if you hit the limit.

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