PDFAgent Blog
Practical guides on working with PDFs — how-tos, comparisons and honest advice on doing it privately, without uploading your files.
Passport Photo Sizes by Country (2×2 in, 35×45 mm and More) — Make One at Home
Exact passport photo sizes by country — US 2×2 in, UK/EU 35×45 mm, Canada, China, India — with head-size rules, pixels at 300 DPI and how to make and print one at home for free.
How to Redact a PDF Properly (Black Boxes That Can't Be Undone)
Drawing a black box over text is not redaction — the words are still there. Here's how to redact a PDF permanently, for free, in your browser, so names and numbers are truly gone. No upload.
How to Add Text to a PDF Without Acrobat (Free, In Your Browser)
Need to type a name, date or answer onto a PDF but don't have Acrobat? Here's how to add text to any PDF for free — click where it goes, download, done. No upload, no account.
ID Photo Upload Guide: Sizes, Formats and Fixes for Rejected Photos
Your passport or ID photo upload keeps getting rejected? Learn what online portals actually check — format, pixels, KB, background — and how to fix each error for free in your browser.
How to Compress a Photo to 20 KB for Official Forms (Free, No Upload)
Exam, visa and job portals keep asking for a photo 'under 20 KB'. Here's how to compress a photo to 20 KB and still pass the check — free, private, in your browser.
How to Make an Invoice as a Freelancer (Free Template + Checklist)
First freelance client and no idea how to bill them? Here's exactly what a freelancer invoice must include, how to number it, and how to create a professional PDF invoice free — no sign-up, nothing uploaded.
How to Fill Out and Submit a PDF Form Online (Free, No Printing)
Stuck printing a PDF form just to sign it? Here's how to fill, sign, and submit any PDF form online for free — no printer, no scanner, no upload to a stranger's server.
PDF Too Big to Upload? How to Fix Size-Limit Errors on Forms (Free)
Government portal, job application, or online form rejecting your PDF for being too large? Here's how to shrink it to fit any upload limit — free, private, in your browser.
How to Compress a PDF to 100 KB (Free, No Upload)
Job portals and government forms often cap uploads at 100 KB. Here's exactly how to hit that limit without guessing — free, private, and in your browser.
How to Convert a PDF to Black and White (Free, in Your Browser)
Scanned in color by mistake, or need a grayscale copy for printing and smaller file size? Here's how to convert any PDF to black and white free, without installing anything.
How to Flatten a Fillable PDF Form (Free, In Your Browser)
Turn an editable PDF form into a locked, flat document nobody can accidentally change. Free, private, and done in seconds — no software to install.
How to Convert an Excel Sheet to PDF (Free, No Upload)
Send a clean, print-ready PDF instead of a raw spreadsheet. Convert XLSX, XLS or CSV to PDF in your browser — free, private, and formatted to fit the page.
What Is an ATS and How Do You Beat It? (Full Guide)
An Applicant Tracking System scans your resume before a human ever sees it. Here's exactly what an ATS checks, why it rejects good candidates, and how to format a resume that gets through — free and in your browser.
How to Extract Images from a PDF (Free, No Upload)
Pull every photo, chart, or logo out of a PDF as separate JPG or PNG files — free, in your browser, no upload and no quality loss. Here's how.
How to Crop a PDF Online (Trim Margins, Free & Private)
Scanned page with huge white borders, or a PDF that needs tighter margins before printing? Here's how to crop a PDF free, in your browser — no upload, no Acrobat.
How to Convert a Word Document to PDF (Without Losing Formatting)
Turn a .docx into a clean, correctly formatted PDF in seconds — free, private, and in your browser. No email attachments, no upload, no broken fonts.
How to Extract Specific Pages from a PDF (Free, No Upload)
Need just pages 3-7 out of a 40-page PDF? Here's how to pull out exactly the pages you want into a new file — free, private, and done in your browser.
How to Fix a Corrupted PDF That Won't Open (Free, No Upload)
PDF says 'file is damaged' or won't open at all? Here's how to repair a corrupted PDF for free in your browser — no software to install, no upload required.
How to Write a Cover Letter (Free Template + Real Example)
A cover letter that actually gets read: the 5-part structure, a copy-paste template, a filled example, and how to send it as a clean PDF — free, in your browser.
How to Edit PDF Metadata (Title, Author, Keywords) — Free
Change a PDF's title, author, subject, and keywords in seconds. Learn what PDF metadata actually does, why it matters for privacy and SEO, and how to edit it free in your browser.
How to Watermark a PDF (CONFIDENTIAL, DRAFT, or Custom Text) — Free
Stamp CONFIDENTIAL, DRAFT, or your own text across every page of a PDF in seconds. Free, private, and runs entirely in your browser — no upload, no signup.
How to Make a PDF Smaller for WhatsApp (Free, No Upload)
WhatsApp won't send your PDF or it arrives blurry after compression? Here's how to shrink a PDF the right way before sending it on WhatsApp — free, private, in your browser.
How to Print 2 or 4 PDF Pages Per Sheet (Save Paper & Ink)
Fit 2 or 4 PDF pages onto each printed sheet to save paper and ink. Here's how to bake it into the PDF so it prints right anywhere — free, in your browser.
How to Add Page Numbers to a PDF (Free, Any Position)
Add page numbers to a PDF in seconds — bottom or top, any corner, plain or 'Page X of Y', starting from any number. Free, in your browser, no upload.
How to Remove a Password from a PDF You Own (Free)
Tired of entering the same PDF password every time? Here's how to unlock a PDF you legitimately own — free, private, and without uploading anything.
How to Rotate a PDF That Opens Sideways (and Save It)
Scanned a PDF and it opens sideways or upside down? Here's how to rotate it permanently — so it stays fixed in every viewer — free and in your browser.
JPG vs PNG vs PDF: Which Format Should You Use (and When)
Confused about JPG, PNG and PDF? A plain-English guide to what each format is best at — photos, screenshots, documents — and how to convert between them free.
How to Combine Photos into One PDF (from Your Phone, Free)
Turn several photos into a single PDF — receipts, documents, ID scans — straight from your phone or computer. Free, private, no app to install.
How to Delete Pages from a PDF (Free, Without Software)
Need to remove a page from a PDF? Here's how to delete one or several pages for free, right in your browser — no Acrobat, no upload, original quality kept.
How to Write a Resume With No Experience (Free Template + Examples)
First job, career change or just graduated? Here's exactly how to write a strong resume when you have no work experience — what to include, what to skip, and a free PDF builder.
How to Convert a Scanned PDF to Editable Text (OCR, Free)
A scanned PDF is just a photo of a page — you can't select or search the text. Here's how OCR turns it into real, editable text for free, right in your browser.
How to Reduce PDF Size for Email (Under 25 MB, Free)
Your PDF is too big to email? Here's how to shrink it below Gmail's and Outlook's 25 MB limit in seconds — free, private, and without losing readable quality.
How to Sign a PDF Without Printing It (Free, on Any Device)
Stop printing, signing and scanning. Here's how to add a real signature to a PDF on your computer or phone in under a minute — free, and 100% private.
How to Make a Resume in PDF (Free, No Sign-Up) in 2026
Build a clean, professional resume and download it as PDF — for free, with no account and no watermark. A practical guide to what to include and what to skip.
What Is an ATS-Friendly Resume (and How to Make One That Passes)
Most resumes are read by software before a human sees them. Here's how applicant tracking systems work and how to build a resume that gets through them.
Is It Safe to Upload PDFs to Online Tools? What Really Happens to Your Files
Before you upload a contract or ID to a free PDF website, here's what actually happens to your file on their servers — and how to edit PDFs without uploading them at all.
How to Merge PDF Files for Free (Without Uploading Them)
A step-by-step guide to combining PDF files into one — in the right order, without losing quality, and without uploading your documents to any server.
How to Compress a PDF Without Losing Quality
Why PDFs get huge, the difference between lossless and lossy compression, and how to shrink a PDF for email while keeping it sharp — all in your browser.
How to Convert a PDF to Excel (Free, and What Actually Works)
An honest guide to getting tables out of a PDF and into Excel — what's realistic, when OCR is needed, and how to do it without uploading sensitive data.