CombinePDF review
A straightforward free web tool for occasional PDF and image merging.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
CombinePDF is a free web-based PDF merger for people who need to combine multiple PDF files or images into one downloadable PDF. It supports PDF, JPG, JPEG, PNG, and BMP inputs, and lets users arrange uploaded files before merging. No registration is required, and the generated PDF can be downloaded after processing. Its straightforward scope makes it a practical fit for occasional document combining rather than a broader PDF management workflow.
The Free plan costs nothing and includes PDF and image merging, no watermark, no sign-up requirement, support for up to 20 files per merge, and a 120 MB maximum per file. The plan covers the complete published offering, with no paid tier described. That makes the product easy to evaluate for one-off tasks or light recurring use, while the 20-file and per-file size limits define its practical ceiling. Users handling larger or more extensive batches may need a different tool.
CombinePDF’s main strength is its narrow, browser-first workflow: upload files, arrange them, merge them, and download the result. It also automatically deletes uploaded files and generated PDFs when the user leaves the page. The trade-off is equally clear: it is available through the web, and its documented feature set centers on combining files rather than editing or managing PDFs more broadly. Choose CombinePDF for occasional free merging without an account or watermark. Choose an alternative when your workflow requires capabilities beyond file combination, larger inputs, or more than 20 files at once.
CombinePDF pros and cons
- Where it wins
- Merges PDFs with JPG, JPEG, PNG, and BMP images
- Supports up to 20 files per merge with file ordering
- No sign-up or watermark; files are deleted when leaving the page
- Where it doesn't
- Web-only access limits it to browser-based workflows
- Each uploaded file must be 120 MB or smaller
- Focused on merging rather than broader PDF document tasks
CombinePDF fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update