Renders a scannable QR code from any text or URL with a client-side Reed-Solomon encoder at fixed high error correction. Customize size, colors, and center logo, then download the PNG — free, local, no signup.
Runs on QRCode.js
Content reviewed October 2026 · About Toolzum
Generates real scannable barcodes in UPC-A, EAN-13, Code 128, and Code 39 — JsBarcode encoders with guard patterns, checksums, and start/stop codes, rendered to SVG. Input never leaves your device — everything runs locally in your browser.
Convert ring sizes across US, UK, EU, and Japanese standards with millimeter diameters. Buy a size 7 as EU 54 correctly — free, local, no signup.
Convert shoe sizes across US, UK, EU, and CM Mondopoint with foot-length mapping. Translate EU 42 to US 9 accurately — free, local, no signup.
Renders pasted HTML and CSS markup (no file upload, no URL screenshots) into downloadable PNG, JPEG (fixed quality 0.95), or SVG via the html-to-image library. Preview is DOMPurify-sanitized — free to start with no signup.
Export 14 fixed PNG sizes (1024, 512, 192, 180, 167, 152, 120, 87, 76, 60, 58, 40, 32, 16) from pasted SVG code or one uploaded image (PNG/SVG/JPEG), downscaled with high-quality smoothing into a flat app-icons.zip. 5 free generations per session; Pro unlimited — local Canvas work.
Any text string, URL, email address, phone number, or Wi-Fi credentials. URLs are the most common use, but the encoder handles any UTF-8 text up to the QR code capacity limit.
QR codes download as PNG up to 512px — crisp on screens, cards, and small print. For large posters, regenerate at maximum size and test-scan before printing.
Yes — foreground and background colors plus an optional center logo are built in. Keep contrast high (dark code on light background) or scanners may fail; error correction stays fixed at high.
Yes. QR codes are encoded entirely in your browser using a Reed-Solomon encoder. No data is sent to any server during generation.
A standard QR code can hold up to 4,296 alphanumeric characters or 7,089 numeric digits. URLs and short text strings use only a fraction of this capacity.
The tool never emits a bare VEVENT (most calendar apps reject it) — it wraps the event in a VCALENDAR envelope with VERSION 2.0 and PRODID Toolzum QR Event, then SUMMARY plus DTSTART and DTEND inside. Example: Team Meeting at 20260724T090000 to 20260724T100000 arrives as one add-to-calendar card.
Barcode Generator
Generates real scannable barcodes in UPC-A, EAN-13, Code 128, and Code 39 — JsBarcode encoders with guard patterns, checksums, and start/stop codes, rendered to SVG. Input never leaves your device — everything runs locally in your browser.
WiFi QR Generator
Generate WiFi QR codes guests scan to join — no password dictation. Put one on the fridge for visitors — free, local, no signup.