About Merge PDF
Merging PDFs is one of the most common document tasks in offices, schools, and at home. When you have several reports, invoices, or scans saved as separate files, combining them into a single PDF keeps everything in one attachment, preserves reading order, and simplifies archiving. This Merge PDF tool does exactly that: you upload multiple PDFs, keep them in the order you want, and download one merged file you can email, upload to a portal, or store in the cloud.
Recipients prefer one PDF over a zip of loose pages because it opens the same way on phones, tablets, and desktops without guessing which file comes first. Lawyers bundle exhibits, teachers build handouts, HR teams join onboarding forms, and freelancers send one portfolio file. The workflow runs in your browser through DocumentToolbox, which helps when you cannot install desktop suites on a shared or locked-down machine.
Before you merge, confirm each source file is complete and not blocked by a password your workflow cannot supply. Large jobs must respect the upload limit on the form; if you are near the cap, merge in batches or run Compress PDF on especially heavy inputs first. Fonts, images, and layout usually carry through from your originals, though complex forms and bookmarks may vary depending on how each PDF was produced.
After merging, you can still split the document again if you later need separate chapters. This page stays deliberately simple: upload, order, run the tool, download. No account is required for typical use. For contracts or identity documents, review our privacy guidance and prefer offline tools when confidentiality is paramount.
Supported formats
This tool accepts PDF. Multiple files are supported when the control allows it—order usually matches page order in the output. Always respect the upload limit shown next to the form before sending large documents.
How to use
- Click Upload and choose your files.
- Set any options shown (compression, mode, ranges, etc.).
- Press Run tool and wait until the progress finishes.
- Download or copy the result from the result panel.
If processing fails, check the upload size limit on the form, try fewer or smaller files, or retry in a fresh tab.
Security & privacy
Files and text you send are processed to produce your result and are not intended for long-term storage on your behalf. Avoid uploading passports, bank details, medical records, or legally sensitive material unless you accept the risks of any online service. For confidential workflows, prefer offline software on a device you control. Read our privacy policy for site-wide practices.