A QR code (Quick Response code) is a two-dimensional barcode that stores data — URLs, text, WiFi credentials, contact info (vCard), payment details (UPI), and more. When scanned with a smartphone camera or QR reader app, it instantly opens the encoded information. QREndlessPro supports 1,421+ QR code types across 38 categories.

Is QREndlessPro free?

Yes, QREndlessPro is 100% free forever. There are no sign-ups, no subscriptions, no watermarks, and no hidden fees. All 7 tools (Generator, Bulk Generator, Customizer, Scanner, Enhancer, Decoder, and Expiry Checker) work entirely in your browser — your data never leaves your device.

What formats does QREndlessPro support?

QREndlessPro supports 7 export formats: PNG, SVG, PDF, EPS, JPEG, WebP, and Base64. QR codes can be generated in any size from 100px to 4096px, with custom colors, logos, and error correction levels (L, M, Q, H). Bulk QR codes can be exported as print-ready Grid PDFs or ZIP archives.

How do I create a QR code for WiFi?

Select 'WiFi' as the QR type in QREndlessPro, enter your network name (SSID), password, and encryption type (WPA/WEP). Click Generate — your WiFi QR code is ready instantly. Guests can scan it to connect without typing the password. You can also bulk-generate WiFi QR codes for hotels, offices, or events.

Can I add my logo to a QR code?

Yes! QREndlessPro's Customizer tool lets you embed a logo in the center of your QR code. It automatically upgrades error correction to Level H so the QR code remains scannable even with 30% of the code covered. You can also add custom colors, gradients, dot styles, and branded frames.

How do I scan a QR code from an image?

Use QREndlessPro's Scanner tool — either drag & drop an image file or use your device camera. It reads QR codes and 13+ barcode formats (EAN-13, Code 128, UPC-A, Data Matrix, Aztec, PDF417, etc.). Bulk scanning is supported — upload multiple images and export results as CSV.

Is my data safe? Does QREndlessPro collect my information?

QREndlessPro is 100% browser-based — all QR code generation, scanning, and decoding happens on your device. Your data is never uploaded to any server. There are no accounts, no tracking, no data collection. The tool even works offline after the first load as a PWA (Progressive Web App).

Free · No Signup · No Watermark

Free Custom 4-State Barcode Generator

Custom 4-state symbology. Generate free Custom 4-State barcodes online — 100% browser-based, unlimited, no signup. Download as PNG or SVG.

Generate Custom 4-State Barcode All Barcode Types

About the Custom 4-State Barcode

Custom 4-State Custom 4-state symbology QREndlessPro lets you generate unlimited Custom 4-State barcodes for free, entirely in your browser — no server processing, no signup, no watermark.

Our Custom 4-State generator uses the industry-standard BWIPP (Barcode Writer in Pure PostScript) engine, rendered 100% client-side via bwip-js. This means your data never leaves your device, and barcodes are generated instantly with print-ready accuracy.

Custom 4-State Format

Data format:: Letters D A F T only
Sample data:: DAFTDAFT
Category:: Postal Codes
Export formats:: PNG, SVG

How to Generate a Custom 4-State Barcode

Open the Generator

Click "Generate Custom 4-State Barcode" — the tool opens with Custom 4-State pre-selected.

Enter Your Data

Type the data to encode. Letters D A F T only.

Download Free

Download as PNG for web or SVG for print. No watermark, no signup.

Open Custom 4-State Generator

Why Generate Custom 4-State Barcodes with QREndlessPro

Instant Generation

Custom 4-State barcodes render instantly as you type. No waiting, no page reload.

100% Private

All generation happens in your browser. No data uploads. No tracking.

Free PNG + SVG

Download print-ready barcodes. No watermark, no attribution required.

Works Anywhere

Any device, any browser. Offline with PWA. No install needed.

Custom 4-State Barcode FAQ

Is the Custom 4-State barcode generator free?

Yes. No signup, no API key, no credit card. Generate unlimited Custom 4-State barcodes free forever. Download as PNG or SVG with no watermark.

What data format does Custom 4-State use?

Custom 4-State requires: Letters D A F T only. The sample "DAFTDAFT" is a valid example you can use to test generation immediately.

Can I download Custom 4-State barcodes as SVG?

Yes. Download Custom 4-State as PNG (raster for web) or SVG (vector, scalable for print). Both formats are free with no watermark.

Is my Custom 4-State barcode data safe?

Yes. All Custom 4-State barcode generation happens 100% in your browser. No data is sent to any server. Your information stays private and secure.

What is Custom 4-State used for?

Custom 4-state symbology Custom 4-State is one of 104+ barcode types supported by QREndlessPro's free browser-based generator.

All Barcode Categories

Linear Codes

Code 2 of 5 Family

Code 25 Interleaved 2 of 5 (ITF)ITF-14 IATA 2 of 5 Industrial 2 of 5 Matrix 2 of 5 COOP 2 of 5 Datalogic 2 of 5

EAN / UPC

EAN-13 EAN-8 EAN-14 / GTIN-14 UPC-A UPC-E EAN-2 Addon EAN-5 Addon ISBN ISMN ISSN SSCC-18 PZN

2D Codes

Micro QR Code Data Matrix Data Matrix Rectangular Data Matrix Rectangular Extension PDF417 Compact PDF417 MicroPDF417 Aztec Code Compact Aztec Code Aztec Runes MaxiCode Han Xin Code DotCode Ultracode Swiss QR Code

GS1 DataBar

GS1 DataBar Omni GS1 DataBar Stacked GS1 DataBar Stacked Omni GS1 DataBar Truncated GS1 DataBar Limited GS1 DataBar Expanded GS1 DataBar Expanded Stacked

GS1 & GS1 Composite

HIBC (Health Industry)

HIBC Code 128 HIBC Code 39 HIBC PDF417 HIBC MicroPDF417 HIBC Data Matrix HIBC Data Matrix Rectangular HIBC QR Code HIBC Aztec Code HIBC Codablock F

Postal Codes

USPS POSTNET USPS PLANET USPS Intelligent Mail Royal Mail 4-State AusPost 4-State Japan Post KIX (Netherlands)Deutsche Post Identcode Deutsche Post Leitcode Custom 4-State Marks & Spencer

Pharmaceutical

Pharmacode (Binary)Two-track Pharmacode

Ready to Generate Custom 4-State Barcodes?

Free, no signup, no watermark. Custom 4-State + 104+ more types. Download PNG or SVG. 100% browser-based.

Start Generating Custom 4-State