Free online tools for everyday files
Online Convertio is a small collection of free tools for jobs that come up again and again: turning a spreadsheet into JSON or SQL, making a batch of QR codes, shrinking photos, working with PDF files, converting videos and converting data types while coding. Pick a tool from the cards above. Every tool runs inside your own browser. Your files are not uploaded, there is nothing to install, and you do not need an account to use them.
Why people use Online Convertio
- Private by design: files are processed on your device, not on our servers. Close the tab and nothing is left behind.
- Free and simple: no sign-up, no watermark and no limits set by the site. Open a tool and use it.
- Fast: because nothing has to be uploaded or downloaded from a server, most jobs finish in seconds.
- Works on any device: use it on a laptop, tablet or phone with a modern browser.
What you can do on Online Convertio
- Convert CSV to JSON, CSV to SQL or CSV to a Markdown table.
- Generate QR codes in bulk from a list of links or codes.
- Compress images online and convert JPG, PNG and WebP.
- Merge PDF, split PDF, compress PDF, convert JPG to PDF, PDF to JPG, PDF to Word and Word to PDF.
- Convert video between MP4, AVI, MOV, MKV, WebM and more.
- Convert data types: string to number, object to JSON string, boolean, Base64 and more.
How it works
- Open the tool you need from the list above.
- Add your data or files. They stay in your browser.
- Choose your options and run the tool.
- Copy or download the result.
Guides and tips
Short how-to articles on our blog explain the most common jobs: converting CSV to JSON, using QR codes for inventory, reducing image size for the web and merging and compressing PDFs.
Frequently asked questions
Is Online Convertio really free?
Yes. All the tools are free to use and do not need an account.
Are my files uploaded to your servers?
No. The tools run in your browser, so your files and data stay on your device.
Is there a file size limit?
The site does not set one. Very large files are limited by your device's memory, so they can take longer or be easier to handle in parts.
Do I need to install anything?
No. Everything works in a normal browser such as Chrome, Edge, Firefox or Safari.
Which tools are available?
A CSV and data converter, a bulk QR code generator, an image compressor and converter, and a PDF toolkit with tools for merging, splitting, compressing, converting and editing.
How can I contact you?
Use the contact page to send a message or suggest a new tool.