Guides
Short, practical answers to common PDF and image questions, with the free tool that does each job in your browser.
How to Compress a PDF and Reduce Its Size
To compress a PDF, open it in Compress PDF, pick Balanced compression and download the smaller file. Scanned and image-heavy PDFs shrink the most. Text-only PDFs are already small and may not get smaller.
How to Merge PDF Files Without Uploading
To merge PDFs, add them to Merge PDF, drag them into the order you want and press Merge. The combined file downloads straight away. The pages are copied exactly, so nothing loses quality.
Reduce Image Size Without Losing Quality
The quickest way to reduce an image's file size is to compress it in Compress Image at about 80% quality. If it is still too big, lower its pixel dimensions with Resize Image, or convert it to WebP.
PNG vs JPG vs WebP: Which Image Format to Use
Use JPG for photos you want to share, PNG for screenshots, logos and anything transparent, and WebP for the smallest files on websites. WebP works in all current browsers, but some older apps still expect JPG or PNG.
Are Online PDF Tools Safe? What to Check
Online PDF tools that upload your file put a copy on someone else's server, where it is stored at least briefly. Tools that run in your browser, like Devcipator Tools, process the file on your own device, so it is never sent anywhere.
How to Sign a PDF Online Without Printing It
To sign a PDF without printing it, open it in Sign PDF, draw your signature or upload a picture of it, drag it to the right spot and download the signed copy. The document stays on your device the whole time.
Do QR Codes Expire? Static vs Dynamic Codes
A static QR code never expires: the link or text is stored inside the code itself, so it works as long as that link does. Dynamic QR codes point to a redirect on a company's server and can stop working when a trial or subscription ends. The QR Code Generator here makes static codes.
How to Compress an Image to 100 KB for Forms
To get an image under 100 KB, open Compress Image to 100 KB, add the photo and press Compress. If the result is still too big or blurry, crop it to the required shape and lower its pixel size first; fewer pixels reach small sizes with better quality.
How to Combine PDF and JPG Files Into One PDF
To combine PDF and JPG files, first turn the images into a PDF with Images to PDF, then add that file and your other PDFs to Merge PDF and put them in order. If the result is too large to send, shrink it with Compress PDF.