QR Studio

Single QR codes for URLs, text/raw content, WiFi, vCard contacts, email, SMS and calendar events; shared colors, correction, size and optional logo; batch PNG/SVG ZIPs; styled PDF print sheets; QR and Code 128/EAN-13 image or camera scanning; QR content inspection; barcode generation; and EAN/UPC/GTIN check-digit calculation or validation. The standalone tools remain available for focused tasks.

A generated single code or batch can be passed directly into print layout with its current colors and logo. Single content can be inspected. Scanned or pasted content can be explicitly transferred to Create as raw text, preserving its exact payload, or to the barcode generator when in barcode mode. Editing QR style invalidates generated QR results and sheets; changing print settings invalidates only the PDF. No file transfer between servers is involved.

Yes. QR Studio requires dark modules over a lighter background with at least 4.5:1 contrast, preserves a quiet zone and uses High error correction when a logo is present. Each generated QR must decode locally to its exact content before it becomes downloadable. This check is not a guarantee across phones, printers or paper; test the final code. Logos are normalized to a bounded square PNG. Choose a smaller logo if checking fails.

Single payloads: 1,800 UTF-8 bytes, subject to QR capacity and the selected correction level. Batches: 50 entries, 1,200 bytes per entry and 30 MiB combined image/vector output; ZIP up to 32 MiB. QR images: 512 or 1,024 pixels. Logos: 5 MiB, 12 MP and 8,192 pixels per side, static PNG/JPEG/WebP. Print layouts: A4 or Letter, 25/35/45 mm code width, up to 20 copies each and 200 codes total; PDF up to 50 MiB. Dense symbols may require larger print widths.

Timed events use explicitly entered UTC values. All-day dates include the selected last day; their encoded end date is exclusive. QR Studio offers an ICS download for calendar-form results. Scanner support varies. Reusing scanned calendar content as raw text preserves its existing bytes rather than recreating or changing its dates.

No. Contents and recognized fields are displayed as inert text. No URL is visited, script executed, message sent or network joined automatically. WiFi passwords are collapsed in the field summary, but remain readable in raw content and downloads. Camera use is optional and needs browser permission. It stops on success, leaving the scan workflow, clearing or hiding the page.

No. They are static codes that contain your content directly, without tracking redirects or a subscription. They do not expire by themselves, but a linked resource can become unavailable. Anyone with access can read the content, including passwords. Batch manifests and decoded TXT files also contain the original contents.

Cancel discards pending output. Clear studio stops camera scanning, invalidates pending operations, clears content and generated results, releases logos and revokes application-held object URLs. Leaving the page also performs cleanup. Inputs are not saved in browser storage. Already downloaded files remain on your device.