A surprising number of forms still arrive as a PDF with an instruction to "print, complete and return". Scholarship applications, school admission forms, bank mandates, rental applications, leave requests. Printing one means finding a printer, writing in small boxes by hand, then scanning or photographing the result, which usually produces a crooked, grey, oversized file that is harder to read than the original.
In almost every case you can skip all of that and fill the form directly on screen. The result is cleaner, smaller and easier for the person receiving it to read. How you do it depends on which of two kinds of form you have been sent.
First, find out which kind of form you have
A fillable form has real fields built into it. Open it in a browser or a PDF reader and click on an answer box: if a cursor appears and you can type, it is fillable. Many readers also highlight the fields in light blue, or show a bar saying the document contains fillable fields.
A flat form has nothing to click. The boxes and lines are part of the page, the same as the printed words. Scans of paper forms are always flat, and so are many forms that were exported from Word without anyone adding fields.
Both can be completed without a printer. Fill PDF form handles both: it lists the fields of a fillable form so you can work through them in order, and on a flat form it lets you click anywhere on the page and type.
Filling a fillable form
Fillable forms are the easy case, with a few traps.
- Save a copy, then fill the copy. If you make a mistake you can start again from a clean form.
- Watch the date format. Forms from different countries expect 16/10/2026, 10/16/2026 or 2026-10-16. If the field shows an example, follow it exactly. Where it does not, write the month as a word: 16 October 2026 cannot be misread.
- Do not squeeze long answers. Some fields have a character limit and silently cut off the end of what you type. Read each answer back after you move to the next field.
- Tick boxes and radio buttons count. A missed "I agree" box is one of the most common reasons a form is returned.
When you finish, consider locking the answers. A filled form is still editable, and some phone apps show the fields as empty when the recipient opens it. Flattening turns the answers into part of the page, so they look the same everywhere and cannot be changed. You can do this when saving in Fill PDF form, or afterwards with Flatten PDF. Keep an unlocked copy for yourself in case you need to correct something.
Filling a flat or scanned form
On a flat form you place each answer yourself. Done carelessly, typed text floats above lines or spills across boxes, and the form looks worse than handwriting. Four habits make the difference.
- Match the size of the printed text. Most forms are printed at 10 or 11 points. Typing your answers at the same size makes them look as though they belong. Use 8 or 9 points for small boxes such as the separate squares of a date of birth.
- Sit on the line, not on top of it. Typed text rests on an invisible baseline, so click slightly above a printed line and the letters will sit on it.
- Line up with the label. Start each answer the same distance from its label, and the page reads as one neat column instead of a scatter.
- Use capitals where the form asks for them. "Please write in BLOCK CAPITALS" applies to typed answers too.
If a form has dozens of tiny boxes, one character per box, do not try to space letters to fit. Type the answer once, just inside the first box, at a size that fits the row. Officers reading the form care that the answer is legible, not that each letter sits in its own square.
Signing the completed form
Once the answers are in, download the form and open it in Sign PDF. Draw your signature with a finger on a phone, type it, or upload a photo of your signature on white paper, then drag it onto the signature line. If the form asks you to initial every page, choose Every page for your initials first, then sign the last page in a second run. Add the date under the signature with one click.
Whether a drawn signature is accepted depends on who you are sending it to. For most everyday forms it is. If the form or the office mentions a "digital signature", a certificate or a specific signing platform, ask before you send.
Attachments and the final file
Forms often need supporting documents: a copy of an ID, a certificate, a recent photograph. If the recipient wants a single file, put the form first and the attachments after it, in the order the form lists them, using Merge PDF. Name the final file so that it makes sense in someone else's inbox, such as Surname-Firstname-scholarship-application.pdf, rather than form_final_v3.pdf.
If there is an upload limit, check the size last. A typed form is tiny, but scanned attachments are not, and they are usually what pushes a file over 2 MB.
When it will not work
Two situations need a different approach.
The form opens with "Please wait..." and a message that your viewer may not be able to display it. That is an XFA form, an older Adobe format. It only works properly in Adobe Acrobat Reader, which is free. Fill it there, or ask the office for a standard PDF.
Your answers are not in English. Forms that must be completed in Nepali, Hindi or another script need a font that contains those letters. Browser-based tools that use the standard PDF font, including the one on this site, cannot write them. Use a desktop PDF editor that lets you choose a Unicode font, or, if the form allows it, handwrite those answers on a printout.
Everything described here happens in your browser. The form, your answers and your signature stay on your own device, which matters for documents that usually contain your address, your ID number and your date of birth.