PDF Guides and Help

A PDF is the standard format for sharing documents that must look the same on every device, which is why job applications, invoices, school assignments, contracts and government forms are almost always requested as PDFs. The format is reliable, but editing it is not always easy. Many people only discover this when a portal rejects a file for being too large, when two scans need to become one document, or when a single page is upside down.

These guides explain, in plain language, how each HamsterPDF tool works, when to use it, and how to avoid the most common mistakes. They are written for people who handle PDFs only occasionally and want a clear answer without learning a complicated program. Each tool is free, runs in your browser and needs no account.

• Merge PDF
• Split PDF
• Compress PDF
• Rotate PDF
• Organize PDF
• Delete pages
• Extract pages
• Rename PDF
• Convert

Merging combines two or more PDF files into a single document, in the order you choose. It is the quickest way to turn separate pieces into one tidy file: a cover letter and a resume, several scanned receipts, the chapters of a report written by different people, or a visa application with supporting papers. Many online forms accept only one upload, so merging is often the step that makes submission possible.

Order matters. The merged file follows the sequence shown on screen, so arrange your files before you start rather than fixing the result afterwards. If you merge files with different page sizes, such as a letter-size form and an A4 scan, each page keeps its own size, which is normal and does not harm the document.

Steps

1. Open the Merge PDF tool and add your files.
2. Drag the files into the order you want them to appear.
3. Start the merge and wait for processing to finish.
4. Download the combined file and open it to confirm every page is present.

Tips

• Rename your files with numbers (01, 02, 03) so they are easy to sort before uploading.
• Merge only the files you need; extra pages increase size and may exceed a portal's upload limit.
• If a file is password protected, remove the protection with the owner's permission first.

Open Merge PDF

Splitting does the opposite of merging: it divides one PDF into smaller files. You might split a long scanned bundle into separate documents, send only one chapter to a colleague, or break a large file into parts that fit within an email attachment limit.

You can usually split by page ranges, such as pages 1 to 4 and 5 to 10, or into single pages. Think about the result you want before choosing. If you only need a few pages from a larger document, the Extract pages tool is often simpler, because it gives you just those pages in one file.

Steps

1. Open the Split PDF tool and choose your file.
2. Select how to split: by range, or every page separately.
3. Check the page numbers you entered.
4. Download the resulting files.

Tips

• Page numbers refer to the position in the file, not the number printed on the page, which can differ.
• Keep the original; splitting creates new files and leaves your source untouched.
• Name the parts clearly so you can tell them apart later.

Open Split PDF

Compression reduces file size so a PDF is easier to email, upload or store. Large PDFs are usually large because of images: scans, photos and high-resolution graphics take far more space than text. Compression lowers the weight of those images, and sometimes removes unneeded internal data, to make the file smaller.

There is always a trade-off between size and quality. A small reduction is almost invisible, while an aggressive one can make photos look soft and small text harder to read. Text-only PDFs are often small already, so they may shrink very little. This is not a fault of the tool; there is simply little left to remove.

Steps

1. Open the Compress PDF tool and add your file.
2. Choose a compression level if options are offered.
3. Wait for processing, then compare the new size with the old one.
4. Open the result and zoom in to check that text and images are still clear.

Tips

• If a portal limits uploads to a set size, compress gradually and stop as soon as you are under the limit.
• Scanned documents benefit most; digitally created text documents benefit least.
• Always keep the uncompressed original for printing or archiving.

Open Compress PDF

Scanners and phone cameras often capture pages sideways or upside down, and the problem is usually noticed only after the document has been assembled. Rotating lets you turn pages by 90 or 180 degrees so the whole file reads naturally on screen and on paper.

Rotation changes how pages are displayed and saved in the new file. It does not alter the words or images on the page. If only a few pages are wrong, rotate those pages and leave the rest; if the whole file is sideways, rotate everything at once.

Steps

1. Open the Rotate PDF tool and select your file.
2. Choose the pages to turn, or all pages.
3. Pick the direction: clockwise, counter-clockwise or 180 degrees.
4. Download the file and scroll through it to confirm the orientation.

Tips

• Preview the file first so you know exactly which pages need turning.
• Landscape tables are sometimes meant to be sideways; rotate them only if they are truly misplaced.
• Rotate before merging if you want to keep tidy orientation in a combined file.

Open Rotate PDF

Organizing means rearranging the pages of a single PDF. You can move a page to a different position, reorder a whole section, or tidy a scan that was fed through the scanner in the wrong sequence. It is useful for application packs, reports and any document where the order carries meaning.

Work from a clear plan. Decide the final order, then move pages one at a time, checking the thumbnails as you go. Dragging many pages at once is quicker, but it is also easier to lose track, so review the full sequence before downloading.

Steps

1. Open the Organize PDF tool and add your file.
2. Review the page thumbnails.
3. Drag pages into their new positions.
4. Save and download, then read through the result from the first page to the last.

Tips

• Look at content, not only thumbnails, when pages look alike, such as forms with the same layout.
• Combine with Delete pages to remove blanks while you reorder.
• Keep a copy of the original in case you want to restore the earlier order.

Open Organize PDF

Sometimes a PDF contains pages you do not want to share: a blank sheet from a double-sided scan, a duplicate, a cover page, or information that is irrelevant to the recipient. Deleting pages produces a cleaner, smaller document and keeps people focused on what matters.

Deleting pages is not the same as redacting information. If sensitive details appear on a page you keep, removing other pages will not hide them. Remove the whole page, or use a proper redaction process, before sharing anything confidential.

Steps

1. Open the Delete pages tool and choose your file.
2. Select the pages you want to remove by clicking thumbnails or entering page numbers.
3. Confirm the selection.
4. Download the new PDF and check that the remaining pages are correct.

Tips

• Double-check page numbers before confirming; the numbering follows the file, not any printed page numbers.
• Deleting blank pages can noticeably reduce size for scanned files.
• Remember that the original file is unchanged, so you can try again if you remove the wrong page.

Open Delete pages

Extracting pages lets you pull one or more pages out of a PDF and save them as a new file. This is ideal when you need to send only a signature page, a single invoice from a monthly statement, or the relevant section of a long report.

It is similar to splitting, but the goal is different. Splitting divides a document into several parts; extracting gives you only the pages you choose. Extracting selected pages also reduces what you share, which is a good habit when a document contains information the recipient does not need.

Steps

1. Open the Extract pages tool and add your file.
2. Enter the pages or ranges to keep, for example 2, 5 and 8 to 10.
3. Run the tool.
4. Download the new file and verify the content.

Tips

• Use commas for separate pages and hyphens for ranges.
• Extract first, then compress, if you also need a smaller file.
• Share only what is necessary, especially with documents that contain personal details.

Open Extract pages

A good file name saves time for you and for the person receiving the document. Names such as scan0034 or final_final2 tell nobody anything, while a name like invoice-2026-10-acme tells everyone what the file is before they open it.

Some portals and employers also ask for a specific naming format, such as surname, first name and document type. Renaming helps you follow those instructions exactly. Avoid unusual characters, and keep names short enough to read in an email attachment list.

Steps

1. Open the Rename PDF tool and select your file.
2. Type the new name.
3. Confirm and download the renamed file.
4. Check the name in your downloads folder.

Tips

• Use hyphens or underscores instead of spaces and symbols.
• Include a date in year-month-day form so files sort in order.
• Follow any naming rules given by the organisation you are sending the file to.

Open Rename PDF

Conversion changes a file from one format to another. Common cases include turning photos or scans into a PDF so they can be submitted as a single document, or turning PDF pages into images so they can be used in a presentation, a message or a website.

Image quality depends on the source. A sharp, well-lit photo produces a clean PDF, while a dark or blurry one stays dark or blurry. Converting a PDF into images produces one image per page, so a long document will create many files.

Steps

1. Open the Convert tool and choose the conversion you need.
2. Add your file or files.
3. Run the conversion.
4. Download the results and open them to check quality.

Tips

• Photograph documents on a flat, evenly lit surface to avoid shadows.
• Use the highest-quality source you have; conversion cannot add detail that was never captured.
• Combine converted images with Merge PDF if you need a single multi-page file.

Open Convert