Generators

QR Code Generator

Type or paste any URL, Wi-Fi credential, contact card, or message and get a downloadable QR code. Colors, error correction, and margin are all under your control — no upload, no signup, no watermark.

ContentURLs, plain text, vCards, Wi-Fi strings, and SMS/mailto links all work.

Error correctionHigher levels stay readable when the code is partly damaged or covered by a logo, at the cost of more dense modules.Size (px): 320Margin (modules)

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Preview

Private by design. The QR code is generated entirely in your browser — your input is never sent to any server.

What is a QR code?

A QR code is a two-dimensional barcode that stores text, URLs, or other short data so a phone camera can decode it instantly. The dark and light squares (called modules) encode the bytes plus extra error-correction symbols, which is why a code can still be scanned even when part of it is dirty, scratched, or hidden behind a logo. This generator runs the same encoder that produces the QR codes you see on posters, restaurant menus, and product packaging — but it runs locally in your browser, so the link or message you encode is never sent to any service. You can pick the size, color, margin, and error-correction level, then download a PNG for printing or an SVG for clean scaling at any size.

How to make a QR code

1
Type or paste your content
Most QR codes encode a URL — paste it as-is, including the https:// prefix. You can also encode plain text, contact details, Wi-Fi credentials (WIFI:T:WPA;S:NetworkName;P:Password;;), or SMS/mailto links.
2
Pick an error-correction level
L is the smallest and densest, H is the most resilient. Use M for everyday use, Q or H if you plan to print the code small or place a logo over the center.
3
Customize the look
Drag the size slider to change the export resolution and pick foreground and background colors. The margin (also called the quiet zone) is the white border scanners need around the code — keep at least 2 modules.
4
Download as PNG or SVG
PNG is best for emailing, embedding in slides, or printing at a fixed size. SVG keeps the code mathematically perfect — use it when you need to enlarge for posters or include in vector design files.
5
Test before you publish
Always scan your code with at least two phones (one iOS, one Android) before sharing widely. The scan should land on the exact URL or text you encoded with no decoding errors.

How QR encoding works

1. Pick an encoding mode (numeric, alphanumeric, byte, or kanji) based on the input.
2. Add a length header and pad the bitstream to a fixed length for the chosen version.
3. Split the bits into Reed–Solomon error-correction blocks at the chosen level (L/M/Q/H).
4. Interleave the data and error-correction codewords across the matrix.
5. Place the three locator squares, alignment patterns, timing rows, and version info.
6. Apply the mask pattern that produces the most uniform light/dark distribution.

QR codes are an ISO/IEC 18004 standard. The encoder picks the smallest version (matrix size) that fits the input at the requested error-correction level, then interleaves Reed–Solomon parity bytes with the data so the code can survive partial damage. A mask pattern is applied last so the matrix has roughly equal black and white modules — this is what makes QR codes look 'random' rather than streaky. Decoders reverse the process: locate the three corner squares, deskew the image, demask, and run the Reed–Solomon correction to recover the original bytes.

Reference: ISO/IEC 18004 — QR Code specification

Common QR payloads

Goal	Encode this string
Open a website	https://example.com The most common use — paste the full URL with https://.
Connect to Wi-Fi	WIFI:T:WPA;S:MyNetwork;P:secret123;; iOS and Android prompt to join the network on scan.
Send a text message	SMSTO:+15551234567:Hello Pre-fills SMS recipient and body in the phone app.
Save a contact card	BEGIN:VCARD\nVERSION:3.0\nFN:Jane Doe\nTEL:+15551234567\nEND:VCARD Scanners offer to add the contact directly.

When to use a QR code

Replace a long URL on a poster, sticker, or business card with something a phone camera can scan instantly.
Share a Wi-Fi password without typing it on a guest's keyboard.
Link from print to web — menus, catalogs, conference badges, museum exhibits.
Direct shoppers from a product label to setup instructions, warranty registration, or a video.
Encode an event check-in URL so the team can scan attendees in seconds.
Add a 'tap-to-pay' or donation link to a receipt or sign.
Embed a tracking link in marketing collateral so you can attribute visits back to a specific channel.

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Frequently asked questions

Is this QR code generator free, with no signup or watermark?

Yes. There is no account, no usage cap, and no watermark on the output. The encoder runs entirely in your browser, so we have no per-code cost to recover. Use it as much as you want, including for commercial print runs.

Will the codes work forever?

The QR codes generated here are 'static' — they encode the URL or text directly, so they keep working as long as that URL or content keeps working. There is no expiration on the code itself. If you need the destination to change later without reprinting, host a redirect (your own domain or a link shortener) and encode that redirect URL instead.

Does it support logo overlays?

Not yet — this version generates a clean code without a center logo. If you need a logo, export the SVG, drop it into a design tool, place a logo at the center, and use error-correction level H so the code stays scannable. A built-in logo option is on the roadmap.

What is the difference between PNG and SVG output?

PNG is a fixed-resolution raster image — great for emailing, slides, or printing at a known size. SVG is a vector format that stays sharp at any size, so it is the right choice for posters, stickers, or anywhere the code may be scaled up or down. SVG also produces a much smaller file.

Why do larger inputs make the QR code denser?

QR codes have a fixed grid of 'modules' per version — version 1 is 21×21, version 40 is 177×177. As you add more characters or pick a higher error-correction level, the encoder steps up to a larger version with more modules to fit the data. A denser code can still be scanned, but it needs to be printed bigger for cameras to resolve each module.

What error-correction level should I pick?

L is fine for clean digital use (a code on a website you scan with a steady phone). M is the right default for printed marketing where some smudges are likely. Q or H is what you want when the code will be small, on glossy material, or partly covered by a logo. Higher levels add more redundancy at the cost of more modules.

Can scanners read codes with custom colors?

Yes, as long as there is strong contrast between foreground and background. A dark color on a light color always works; a light color on a dark color also works on most modern scanners but can fail on older or low-end cameras. Stick to high contrast and avoid color combinations like red-on-green that fail in poor lighting.

Is this safe for sensitive content?

The generation happens locally — your input never leaves the browser, so the tool itself does not see your data. That said, anyone who scans the resulting QR code can decode the underlying string. Treat the encoded content the same as any data printed on paper: only encode what you are comfortable being read.

Last updated 2026-04-26

What is a QR code?

How to make a QR code

Type or paste your content

Most QR codes encode a URL — paste it as-is, including the https:// prefix. You can also encode plain text, contact details, Wi-Fi credentials (WIFI:T:WPA;S:NetworkName;P:Password;;), or SMS/mailto links.

Pick an error-correction level

L is the smallest and densest, H is the most resilient. Use M for everyday use, Q or H if you plan to print the code small or place a logo over the center.

Customize the look

Drag the size slider to change the export resolution and pick foreground and background colors. The margin (also called the quiet zone) is the white border scanners need around the code — keep at least 2 modules.

Download as PNG or SVG

PNG is best for emailing, embedding in slides, or printing at a fixed size. SVG keeps the code mathematically perfect — use it when you need to enlarge for posters or include in vector design files.

Test before you publish

Always scan your code with at least two phones (one iOS, one Android) before sharing widely. The scan should land on the exact URL or text you encoded with no decoding errors.

How QR encoding works

1. Pick an encoding mode (numeric, alphanumeric, byte, or kanji) based on the input.
2. Add a length header and pad the bitstream to a fixed length for the chosen version.
3. Split the bits into Reed–Solomon error-correction blocks at the chosen level (L/M/Q/H).
4. Interleave the data and error-correction codewords across the matrix.
5. Place the three locator squares, alignment patterns, timing rows, and version info.
6. Apply the mask pattern that produces the most uniform light/dark distribution.

Common QR payloads

Goal	Encode this string
Open a website	https://example.com The most common use — paste the full URL with https://.
Connect to Wi-Fi	WIFI:T:WPA;S:MyNetwork;P:secret123;; iOS and Android prompt to join the network on scan.
Send a text message	SMSTO:+15551234567:Hello Pre-fills SMS recipient and body in the phone app.
Save a contact card	BEGIN:VCARD\nVERSION:3.0\nFN:Jane Doe\nTEL:+15551234567\nEND:VCARD Scanners offer to add the contact directly.

When to use a QR code

Replace a long URL on a poster, sticker, or business card with something a phone camera can scan instantly.

Share a Wi-Fi password without typing it on a guest's keyboard.

Link from print to web — menus, catalogs, conference badges, museum exhibits.

Direct shoppers from a product label to setup instructions, warranty registration, or a video.

Encode an event check-in URL so the team can scan attendees in seconds.

Add a 'tap-to-pay' or donation link to a receipt or sign.

Embed a tracking link in marketing collateral so you can attribute visits back to a specific channel.