Put the guidance into practice: open the related free tool. Examples use stated inputs and are not measured performance claims.
| Element | Tidy QR behavior | Remaining responsibility |
|---|---|---|
| Logo input | Raster image processed locally | Use artwork you have permission to publish |
| Error correction | Automatically selects H with a logo | Test the final design and physical copy |
| Logo position | Centered with a light backing | Keep surrounding artwork out of the quiet zone |
| Verification | Decodes the rendered sample | Verify exports and production material |
A logo replaces visible information
The central area of a QR code is not empty decoration space. Placing an image there covers some modules. Recovery information can help the reader reconstruct data despite some missing information, but the result depends on the encoded symbol and what is obscured.
This is different from placing a logo beside the code. External branding can identify the organization without covering any modules. If the project has enough room, that is often the simpler design to test and maintain.
When a centered logo is useful, make its role modest. It should reinforce recognition, not become so large that the code is merely a decorative border around a picture. Preserve the finder patterns and clear surrounding margin.
Error correction is not a visible-area budget
DENSO WAVE describes correction levels in terms of codewords. Those percentages do not mean that the same proportion of any chosen region can be safely painted over. Damage to critical structures or an unfavorable arrangement of covered data can cause failure even when a superficial area calculation appears acceptable.
Tidy QR selects level H for its logo workflow and constrains logo size. Those are conservative product choices, not a claim of guaranteed scanning. The local decoder then checks the rendered image with the actual payload and styling.
A pass means that the particular generated sample decoded correctly in that check. It does not establish performance after a print process changes the edges, a glossy surface adds reflection or a small layout makes every module harder to resolve.
Prepare the logo before inserting it
Use a simple image with recognizable shapes at the intended size. Fine lettering and detailed marks can become illegible even when the QR code itself remains readable. A complex logo may need to be placed beside the code instead of inside it.
Tidy QR processes uploaded raster artwork in the browser and normalizes it for the design. The image is not uploaded to a remote logo service. Keep the original brand file separately if a print provider needs it for other parts of the layout.
Only use artwork you have permission to publish. A QR generator does not grant rights to a logo, and adding a familiar mark does not establish the legitimacy of a linked destination. The visible branding and the actual encoded address should match the organization responsible for the material.
A worked proof sequence
Start with the final payload and a plain square pattern. Confirm the content and destination before adding the logo. Then insert the chosen mark, inspect the automatic correction setting and wait for the rendered-image verification result.
Download the preferred print format and place it at the intended physical size. Keep the whole light border. Print a proof on the actual material and scan it from the expected position. Compare the full decoded content with the source payload rather than accepting any successful-looking page opening.
If the proof struggles, remove the logo and retest the same payload and size. That comparison helps isolate whether decoration is contributing to the problem. If both versions struggle, investigate density, contrast, material and placement as well.
Keep finder patterns recognizable
The large corner markers are part of how the symbol is located and oriented. They are not interchangeable with arbitrary brand icons. Styling their edges conservatively is different from covering or replacing them with unrelated artwork.
Tidy QR offers controlled eye styles while preserving their geometry. A later design edit in another application can still damage them. Inspect the composed artwork after any clipping mask, border or overlay is applied.
The center logo should not drift during resizing or conversion. Check that the light backing remains behind it and that no exported image has lost the quiet zone. A correct preview is only the start of the production chain.
Size and density interact with decoration
A longer payload can require a denser grid. At the same outside width, its modules are smaller. Covering part of that grid and printing it small combine separate challenges, so a logo that worked on a short URL is not automatically validated for a long contact record.
Simplify unnecessary payload content before shrinking the whole image. For information that changes frequently, a stable page may be more manageable than embedding every detail in the code. That is a content decision, not merely a cosmetic adjustment.
Use the print calculator with the version selected for the final payload. Recalculate when adding a logo changes the correction level or grid version. The proof should represent the complete final combination.
Keep the approved artwork reproducible
Save the decoded payload, logo source, chosen settings and final export together. If another person rebuilds the code later, those records help them reproduce the approved version rather than guess from a small screenshot.
Retest after changing the logo, payload, print size or material. Each change can alter the conditions that made the earlier sample readable. A past pass is useful evidence, but it belongs to that particular design and output.
Use branding to make the instruction clearer while keeping the code's functional structure intact. A restrained design with a verified destination is more useful than a large central mark that forces visitors to keep moving their phones around.
Review the logo at its actual size
A mark that looks crisp in the upload preview may become an indistinct spot in a small print. Inspect the logo at the final dimensions rather than judging it only while zoomed in. Fine text inside a logo often stops being useful before the QR pattern itself becomes unreadable.
If the brand mark cannot remain recognizable at a restrained center size, move it outside the code. This preserves both the logo's legibility and the QR data area. The surrounding layout can still identify the organization clearly.
Keep the approved logo source with the export, but avoid rebuilding the code by manually pasting the mark over a downloaded plain image. That bypasses the generator's correction selection and rendered-image verification. Make the change in the actual design workflow, then repeat the payload and physical checks on the resulting file.
Frequently asked questions
Can I cover a fixed percentage of any QR code?
No universal visible-area rule guarantees success. Published error-correction percentages refer to codewords, and the covered location matters.
Does Tidy QR upload the logo?
No. The implemented logo processing and rendering happen in the browser.
Why did the code become denser after adding a logo?
The logo workflow selects higher error correction. That can require a larger grid for the same payload.
Sources
Last checked: . Examples are illustrative inputs, not measured results.
- Error correction feature, DENSO WAVE. Checked 2026-10-29.
- Determining the QR code area, DENSO WAVE. Checked 2026-10-29.
- Implementation specifications, checked against source code, Tidy QR. Checked 2026-10-29.