Merge PDF Files into One Document for Form Uploads
Join certificates, marksheets and annexures into one PDF, in your order, with rotation and page removal
Drop PDF files here
Add two or more. You can reorder, rotate and pick pages before merging
Files are merged entirely in your browser and never uploaded anywhere. Drag to set the order, rotate a file that was scanned sideways, or type a page selection like “1-3, 5” to take only some pages from a file. Password-protected PDFs need to be unlocked first.
About this tool
An application portal rarely wants ten separate certificate files. SSC, UPSC and most state PSC forms ask for one PDF of educational documents, one of category certificates, or a single combined annexure, each with its own size cap. This tool joins any number of PDFs into one file in the order you choose.
Each file can be tidied before the join. A scan that came out sideways can be rotated, a cover sheet or blank page can be dropped by clicking its thumbnail, and a typed selection such as 1-3, 5 takes only part of a long file. A page-number stamp at the foot of every sheet is optional.
The merge runs in your browser and nothing is uploaded, so a caste certificate or a marksheet never leaves your device. A password-protected file is marked as unreadable rather than guessed at; remove the password in a PDF viewer first and add that copy.
How to merge PDF files
- Drop two or more PDF files onto the tool, or click the box to pick them. Files that are not PDFs are ignored.
- Arrange the files top to bottom by dragging a row or using the up and down arrows. The merged file follows this order.
- Rotate any file that was scanned sideways. Each click on the rotate button turns every page of that file by 90 degrees.
- To keep only some pages of a file, type a selection such as 1-3, 5 in its Pages box, or click Pages and click a thumbnail to remove that page.
- Type an output file name and tick Add page numbers if the form wants numbered sheets.
- Click Merge, check the page count and output size shown, then download the file.
Controls available on each file
| Control | What it does | Detail |
|---|---|---|
| Drag handle and arrows | Sets the position of the file in the output | Pages are added top to bottom, file by file |
| Rotate | Turns every page of that file by 90 degrees per click | Adds to any rotation already stored in the page, so a page saved at 90 degrees and rotated once more lands at 180 |
| Pages box | Keeps only the listed pages, for example 1-3, 5 | Numbers and ranges separated by commas; a number beyond the last page is ignored |
| Pages strip | Click a thumbnail to remove that page, click it again to restore it | Restore all puts every removed page back |
| Remove (X) | Takes the whole file out of the merge | The other files keep their order |
| Add page numbers | Prints 3 / 12 style numbers at the bottom centre of every page | 9 pt Helvetica, about 6 mm above the bottom edge |
How page selection and removal work together
The pages taken from a file start as the typed selection, or every page when the box is empty. Any page you removed in the thumbnail strip is then subtracted. The label next to the box shows how many pages are kept, for example 4 of 6 kept, so you can confirm the count before merging.
A selection that matches no page, such as 9-12 in a six-page file, turns the Merge button off and shows a warning. Pages are counted from 1, and a range is written with a hyphen. The order of pages inside a file never changes; only the order of files, the rotation and the removed pages do.
Removed pages appear greyed out with a Removed label. A page outside the typed selection is greyed out as well, so the strip shows exactly what will go into the output.
Output size and quality
Pages are copied into the new file as they are. Fonts, images and scan resolution are untouched, so the merged PDF looks identical to the originals page for page. There is no compression step, which also means the output is close to the sum of the inputs.
Hypothetical example: a 10th marksheet of 2 pages at 420 KB, a 12th marksheet of 2 pages at 510 KB and a 3-page degree certificate at 900 KB, with only pages 1-2 of the degree kept. The output has 2 + 2 + 2 = 6 pages, and its size will be a little under 420 + 510 + 900 = 1,830 KB, since the dropped page's image data is left out. The optional stamp reads 1 / 6 on the first page and 6 / 6 on the last.
If the result is over a portal's cap, the fix is at the source. Rebuild bulky scans with the Scan to PDF tool at a lower JPEG quality or in black and white, then merge the smaller files.
Limits and things to check
- At least two readable files are needed; the Merge button stays off until then.
- A file that needs a password shows Not a readable PDF. Remove the password elsewhere and add that copy.
- Rotation applies to the whole file. To rotate a single page, split it out first, rotate that one-page file here, and merge it back in.
- Page numbers are printed over whatever is already at the bottom centre of the page, so check a page that has its own footer.
- Files of different page sizes merge as they are; A4 and Letter pages sit together without resizing.
- Everything is held in memory on your device. Dozens of ordinary certificates are fine; hundreds of megabytes of scans may be slow on a phone.
The thumbnail shows the file's first page turned by the rotation you set; the output applies the same turn to every page of that file.
Frequently asked questions
›How do I combine my 10th, 12th and graduation certificates into one PDF for an SSC application?
Add the three PDFs, then drag them into the order the notification lists, usually 10th first. Open Pages on any file that includes an instruction sheet or a blank back side and click that page to remove it. Name the output something the portal will recognise, such as education-certificates.pdf, click Merge and check that the page count matches what you expect before downloading.
›Can I merge only certain pages from each PDF?
Yes. Every file with more than one page has a Pages box. Type 1-3, 5 to keep pages 1, 2, 3 and 5 of that file, or click Pages and remove individual pages from the thumbnail strip. The two methods combine, and the counter next to the box shows how many pages will be taken from that file.
›Why does the tool say my PDF is not readable?
The file either needs a password to open or is damaged. The tool loads each file to count its pages, and a file it cannot parse is marked Not a readable PDF (encrypted or damaged). For a locked file, open it in a PDF viewer with the password, save or print it to a new PDF without a password, and add that copy.
›Does merging reduce quality or change the page size?
No. Pages are copied as objects, so text stays sharp, images keep their resolution and each page keeps its own size and orientation. An A4 page and a Letter page can sit in the same output. The one change you can make is rotation, which turns a file's pages in steps of 90 degrees.
›How do I add page numbers to the merged PDF?
Tick Add page numbers in the Options panel before merging. Every page in the output gets a small label in the form 3 / 12 printed at the bottom centre, counted across the whole merged file rather than per source file. Leave it unticked if the original documents already carry their own numbering.
›Is there a limit on how many PDFs I can merge at once?
There is no fixed count. The merge is done on your own device, so the practical limit is memory. A set of twenty certificate scans of a few hundred KB each merges in seconds. Very large scanned books of several hundred MB can be slow, especially on a phone, and are better merged in two passes.
›Can I rotate just one page of a PDF before merging?
Rotation here applies to every page of a file. For a single sideways page, first use the Split PDF tool to pull that page out as its own file, add it to the merge in the right position, rotate that one-page file, and leave the rest unrotated.