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Learn and practise programming in your browser. Pick a language: write code, run it in a real terminal and follow the lessons step by step.
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Are my files or text uploaded anywhere?
No. Every tool runs inside your browser on your own device. Nothing you enter or open is sent to a server.
Do I need to create an account or log in?
No login is required. There are no accounts — open any tool and start using it straight away.
Are the tools really free?
Yes. All tools are free, with no limits or watermarks. The site is supported by ads.
Does it work on my phone?
Yes. The tools work in any modern browser on phones, tablets and computers.
Can I use the tools offline?
Once a tool has loaded it does its work on your device, so it keeps working even if your connection drops.
Which file types are supported?
PDF, Word, Excel, PowerPoint, OpenDocument and RTF documents, JPG, PNG, WebP, HEIC, AVIF, GIF and BMP images, MP4, MOV, WebM and MKV videos, MP3, WAV, M4A, OGG and FLAC audio, ZIP, 7z, RAR, TAR and GZIP archives, CSV, JSON, XML and plain text. Each tool lists exactly what it opens.
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Barcode Scanner
Scan EAN, UPC, ISBN, Code 128, Code 39 and other barcodes with your camera or from a photo, and check the number and country prefix.
Scan a barcode with your phone or laptop camera, or read it from a photo or screenshot: choose the image, drop it on the page or paste it with Ctrl+V. The scanner recognises the common product barcodes, EAN-13, EAN-8, UPC-A, UPC-E and ISBN on books, as well as the codes used in shipping, warehouses and libraries such as Code 128, Code 39, Code 93, Codabar, ITF and GS1 DataBar, and 2D codes such as QR, Data Matrix, PDF417 and Aztec.
For product numbers it checks the check digit, which catches most misreads, and shows the GS1 country prefix. Books get an Open Library link and other products a web search. Everything is read on your device, and no app is needed.
How to use Barcode Scanner
- Choose Photo or screenshot, or Camera.
- Choose, drop or paste the image, or start the camera and hold the barcode in the frame.
- Read the number, the barcode type and the check-digit result.
- Copy the number or look the product or book up.
Features
- EAN-13, EAN-8, UPC-A, UPC-E and ISBN
- Code 128, Code 39, Code 93, Codabar, ITF and GS1 DataBar
- QR, Data Matrix, PDF417 and Aztec too
- Check digit verification and GS1 country prefix
- Camera or image, several codes per picture
- Runs on your device; nothing is uploaded
Common barcode types
Different industries use different symbologies; the scanner reads all of these.
| Barcode | Digits or characters | Where you see it |
|---|---|---|
| EAN-13 | 13 digits | Products in shops worldwide, including India (prefix 890) |
| UPC-A / UPC-E | 12 / 8 digits | Products in the USA and Canada |
| EAN-8 | 8 digits | Small packages |
| ISBN (EAN-13) | 13 digits starting 978 or 979 | Books |
| Code 128 | Letters, digits and symbols | Shipping labels, courier waybills, inventory |
| Code 39 | Capital letters and digits | ID badges, industry, some libraries |
| ITF-14 | 14 digits | Cartons and outer cases |
| PDF417 | Large amounts of text | Boarding passes, driving licences, ID cards |
What the number tells you
An EAN-13 starts with a GS1 prefix that shows where the company registered its barcode numbers, not where the product was made: 890 is India, 400 to 440 Germany, 690 to 699 China, 000 to 019 the USA and Canada. The next digits identify the company and the product, and the last digit is a check digit calculated from the others. If the check digit is wrong, the scan was misread or the barcode is damaged. ISBNs begin with 978 or 979 and identify a book edition.
Getting a good scan
Hold the barcode flat and fill most of the frame width with it, with the bars running up and down. Avoid glare from shiny packaging by tilting it slightly, and use good light. Long, thin barcodes on curved bottles scan better from a little further away. From a photo, crop close to the barcode if the picture contains many other things, and make sure it is sharp; blurred or very low-resolution barcodes cannot be read.
Privacy
The camera picture and your images are processed in your browser with a WebAssembly build of the open-source zxing-cpp reader, served from this site. Nothing is recorded or sent. Look-up links only open when you click them.
Barcodes at work
Small shops use a phone or laptop camera as a free barcode reader to check prices and stock, or to read the number of a product that has lost its label. Couriers and warehouse staff read Code 128 and ITF labels on parcels and cartons, and librarians read book ISBNs. Because several barcodes in one photo are all read, you can photograph a shelf label or a delivery note with many codes and copy every number at once.
Frequently asked questions
How do I scan a barcode online?
Choose Camera and point it at the barcode, or choose Photo or screenshot and open, drop or paste a picture of it.
Can I scan a barcode from a picture?
Yes. Choose the image or paste a screenshot with Ctrl+V. Several barcodes in one picture are all read.
What does 890 at the start of a barcode mean?
The company registered its numbers with GS1 India. It does not prove the product was made in India.
Can it look up the product?
It offers a web search for product numbers and an Open Library link for ISBNs. There is no product database built in.
Does it read QR codes?
Yes, and the QR Code Scanner explains QR contents such as links, Wi-Fi and UPI in more detail.
Is the camera picture uploaded?
No. Codes are read on your device.
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