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PDF help center

Answers for people fighting upload limits.

Plain-English guides for job applications, government forms, email attachments, scanned PDFs, and phone documents.

Which file size should I choose?

The right size depends on where you are uploading. Here is what works for the most common situations:

  • 500KB: the safe default for job portals, application systems, and most web upload forms.
  • 200KB: strict government portals, visa and immigration systems, and older enterprise forms.
  • Under 5MB: email attachments to business addresses. Basic compression covers this comfortably.
  • Not sure? Start with 500KB. If the form rejects it, step down to 200KB. If neither works readably, split the document and upload the parts.
How to Compress a PDF to 500KB for a Job ApplicationNeed a PDF under 500KB? Start with image compression, remove extra pages, and use a best-effort compressor before uploading to a job portal.How to Compress a PDF to 200KB OnlineA 200KB limit is strict. Short, text-based PDFs usually work best; scanned multi-page PDFs may need splitting or lower scan quality.Why Is My PDF So Large?PDFs get huge when they contain scanned pages, high-resolution photos, embedded fonts, hidden metadata, or duplicate images.Compress PDF for a Job ApplicationJob portals often reject large resumes, portfolios, and cover letters. Aim for a clean readable file before worrying about fancy design.Compress PDF Without Making It UnreadableGood compression keeps text readable while reducing heavy images and unnecessary PDF data.PDF File Size Limits: What to Do When Uploads FailWhen a site rejects your PDF, the fastest fixes are compression, splitting pages, reducing scan DPI, or exporting a cleaner PDF.How to Reduce PDF File Size on iPhone or AndroidMobile PDFs are often large because camera scans use high-resolution images. Rescan at lower quality or compress the file after saving.Best Free PDF Compressor for Strict Upload LimitsThe best PDF compressor is the one that matches your actual target, shows before/after size, and tells the truth when the target is unrealistic.How to Convert JPG to PDF for UploadsTurn photos, scans, and screenshots into a PDF by ordering images, compressing oversized photos, and exporting one clean file.PDF to Word Conversion GuidePDF to Word works best on digital text PDFs. Scanned PDFs may need OCR, and complex layouts can shift during conversion.Compress a Scanned PDF Without Making It UnreadableScanned pages are images, so they compress differently. Learn the settings that shrink scans while keeping text legible.PDF Too Large for Upload: What to DoWhen a form says your PDF is too large, compress it first, then remove extra pages or split the file if the limit is extremely small.Compress PDF for USCIS or Immigration FormsImmigration uploads often need clear, readable scans. Compress carefully and keep a readable backup before submitting anything important.Best PDF Size for Email AttachmentsSmaller PDFs send faster and are less likely to bounce. For email, compress image-heavy PDFs and keep attachments comfortably under the mail provider limit.How to Reduce PDF File Size on iPhoneiPhone scans can be large. Crop tightly, avoid unnecessary color, then compress the PDF before uploading or emailing it.How to Reduce PDF File Size on AndroidAndroid scan apps often create large image PDFs. Lower scan quality, crop borders, and compress the final PDF.PDF Compression vs PDF Quality: What Changes?Compression usually reduces image resolution, image quality, metadata, or duplicate objects. The goal is a smaller file that still reads clearly.How to Merge Multiple PDFsCombine forms, resumes, cover letters, and supporting documents into one PDF when a portal only accepts one upload.How to Split PDF PagesSplit a large PDF when only some pages are needed or when a strict upload limit makes the full file too large.