25 tools available
Generate and scan QR codes, 1D barcodes, and 2D matrix codes — Wi-Fi, vCard, Code 128, EAN-13, UPC-A, ITF-14, Data Matrix, and PDF417.
FlowUtil's QR & Barcode Tools generate and read scannable codes entirely in your browser — no uploads, no accounts, no servers. Create standards-compatible QR codes from text or URLs, share Wi-Fi access instantly, encode contact details in vCard format, produce Code 128, Code 39, EAN-13, EAN-8, UPC-A, and ITF-14 barcodes with automatic check-digit calculation, generate ISBN book barcodes, and create Data Matrix and PDF417 two-dimensional codes. You can also scan and decode QR codes from an image or your camera, and estimate the right physical QR code size for a given scanning distance.
Generate standards-compatible QR codes from text, URLs, and Unicode content with size, color, and error-correction control.
Create QR codes that connect devices to Wi-Fi automatically. Credentials stay local in your browser.
Generate QR codes containing vCard 3.0 contact information so phones can add contacts automatically.
Generate Code 128 and Code 39 one-dimensional barcodes with per-format validation and PNG download.
Generate EAN-13 barcodes with automatic check-digit calculation and 13-digit validation.
Scan and decode QR codes from an uploaded image or your camera. All decoding runs locally in your browser — no image is uploaded.
Generate UPC-A barcodes with automatic check-digit calculation. Enter 11 digits to compute or 12 digits to validate.
Generate ITF-14 barcodes for packaging and logistics with automatic check-digit calculation and 14-digit validation.
Generate Data Matrix 2D codes from text, URLs, numbers, and Unicode content with adjustable scale and PNG download.
Generate PDF417 two-dimensional barcodes from text, numbers, URLs, and Unicode with adjustable scale and error correction.
Generate Code 128 barcodes from any ASCII text with full-character support, width/height control, readable-text toggle, and PNG download.
Generate Code 39 barcodes with strict character-set validation. Supports A–Z, 0–9, and $ % + - . / space for industrial and inventory use.
Generate EAN-8 barcodes with automatic check-digit calculation. Enter 7 digits to compute the 8th check digit or 8 digits to validate.
Validate ISBN-13 and ISBN-10, convert ISBN-10 to ISBN-13, and generate an EAN-13 book barcode. Hyphen-tolerant input and check-digit verification.
Estimate the right physical QR code size from your expected scanning distance using the 10:1 distance-to-size rule of thumb, with a practical margin.
Generate QR codes that open a pre-addressed SMS message on compatible phones. Enter a phone number and optional message. All data stays local — no SMS is sent.
Generate QR codes that open a pre-addressed email on compatible phones. Enter an email address, optional subject and body. All data stays local — no email is sent.
Create QR codes containing geographic coordinates using the geo: URI standard. Enter latitude and longitude. No map API required — all data stays local.
Generate QR codes containing iCalendar VEVENT data so phones can add a calendar event instantly. Enter title, dates, location and description. All data stays local.
Create QR codes that open the phone dialer with a specified number using the tel: URI standard. Supports international numbers. All data stays local — no call is placed.
Generate QR codes that open a WhatsApp conversation with an optional pre-filled message using the wa.me link standard. Supports international numbers. All data stays local — no message is sent.
Create QR codes containing a Bitcoin payment URI (bitcoin: address, amount, label, message). Encodes user-provided payment info only — no wallets, no private keys, no transactions. All data stays local.
Compare QR error correction levels L, M, Q, and H. See approximate recoverable damage percentages, data-capacity impact, and practical guidance to choose the right level.
Calculate and validate check digits for EAN-13, EAN-8, UPC-A, and ITF-14 barcodes. Enter data digits to compute the check digit, or the full code to validate. Correct algorithm per standard.
Generate Codabar barcodes from digits and the symbols $ : / . + , -. Automatic start/stop characters, width/height control, readable-text toggle, and PNG download — all client-side.
Editor picks — the tools people in this category use most.
Generate standards-compatible QR codes from text, URLs, and Unicode content with size, color, and error-correction control.
Scan and decode QR codes from an uploaded image or your camera. All decoding runs locally in your browser — no image is uploaded.
Create QR codes that connect devices to Wi-Fi automatically. Credentials stay local in your browser.
Generate EAN-13 barcodes with automatic check-digit calculation and 13-digit validation.
The newest tools shipped to this category.
Generate QR codes that open a WhatsApp conversation with an optional pre-filled message using the wa.me link standard. Supports international numbers. All data stays local — no message is sent.
Create QR codes containing a Bitcoin payment URI (bitcoin: address, amount, label, message). Encodes user-provided payment info only — no wallets, no private keys, no transactions. All data stays local.
Compare QR error correction levels L, M, Q, and H. See approximate recoverable damage percentages, data-capacity impact, and practical guidance to choose the right level.
Calculate and validate check digits for EAN-13, EAN-8, UPC-A, and ITF-14 barcodes. Enter data digits to compute the check digit, or the full code to validate. Correct algorithm per standard.
Generate Codabar barcodes from digits and the symbols $ : / . + , -. Automatic start/stop characters, width/height control, readable-text toggle, and PNG download — all client-side.
Generate QR codes that open a pre-addressed SMS message on compatible phones. Enter a phone number and optional message. All data stays local — no SMS is sent.
Generate QR codes that open a pre-addressed email on compatible phones. Enter an email address, optional subject and body. All data stays local — no email is sent.
Create QR codes containing geographic coordinates using the geo: URI standard. Enter latitude and longitude. No map API required — all data stays local.
Generate QR codes containing iCalendar VEVENT data so phones can add a calendar event instantly. Enter title, dates, location and description. All data stays local.
Create QR codes that open the phone dialer with a specified number using the tel: URI standard. Supports international numbers. All data stays local — no call is placed.
Generate Code 128 barcodes from any ASCII text with full-character support, width/height control, readable-text toggle, and PNG download.
Generate Code 39 barcodes with strict character-set validation. Supports A–Z, 0–9, and $ % + - . / space for industrial and inventory use.
Generate EAN-8 barcodes with automatic check-digit calculation. Enter 7 digits to compute the 8th check digit or 8 digits to validate.
Validate ISBN-13 and ISBN-10, convert ISBN-10 to ISBN-13, and generate an EAN-13 book barcode. Hyphen-tolerant input and check-digit verification.
Estimate the right physical QR code size from your expected scanning distance using the 10:1 distance-to-size rule of thumb, with a practical margin.
Generate UPC-A barcodes with automatic check-digit calculation. Enter 11 digits to compute or 12 digits to validate.
Generate ITF-14 barcodes for packaging and logistics with automatic check-digit calculation and 14-digit validation.
Generate Data Matrix 2D codes from text, URLs, numbers, and Unicode content with adjustable scale and PNG download.
Generate PDF417 two-dimensional barcodes from text, numbers, URLs, and Unicode with adjustable scale and error correction.
Generate QR codes containing vCard 3.0 contact information so phones can add contacts automatically.
Generate Code 128 and Code 39 one-dimensional barcodes with per-format validation and PNG download.
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