Compress one PDF or merge up to 20 PDFs locally in your browser — no upload to servers. Get under Gmail 25MB, Outlook 20MB, visa 2MB limits. 150MB desktop / 50MB mobile.
Same compressor. Pages written for the document you actually hold, with the size limit that applies to it.
Email attachment
Get under Gmail's 25 MB and Outlook's 20 MB attachment limits.
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🛂Visa application
CEAC 2 MB, IRCC 4 MB, UKVCAS and ImmiAccount upload limits.
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🏦Bank statements
Shrink statement exports without uploading account data.
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🩺Medical records
Reduce scan size while keeping records readable and local.
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📊Tax filing
Return packets and receipts sized for filing portals.
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⚖️Court filing
PACER and state e-file size caps, with text left searchable.
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🖨️Scanned PDFs
Phone and flatbed scans are images — this is where the size is.
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📄Resume
Get a CV under 2 MB without flattening the text layer.
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🎓School submission
LMS and admissions upload limits, from Canvas to Common App.
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📱Mobile sharing
WhatsApp, Telegram and iMessage limits on phone memory.
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🛒Ecommerce docs
Spec sheets, invoices and return labels that load fast.
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🖼️Printing
The counter-case: when you should not compress before print.
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No registration, no software downloads, and no credentials needed. Simple, visual, and client-safe.
Select PDF documents for the merge workspace. The tool reads page counts locally and applies the published file and memory limits.
Drag source files into the required order and use the available controls to rotate a source before merging.
Your browser handles everything locally. No uploads, no waiting.
BytesPDF currently does two PDF jobs. The product describes what each operation changes instead of presenting planned features as available.
Select multiple PDFs, review page counts and sizes, arrange the sources, and apply source rotation before creating a separate merged file.
Up to 20 files / 150 MB combined on desktop; 10 files / 50 MB on mobile.
View details →Process one PDF with Less, Recommended, or Extreme image settings. Born-digital vector text is not deliberately rasterized; scans can soften.
Up to 150 MB on desktop or 50 MB on mobile, subject to available memory.
View details →Selected PDF content is read in browser workers and is not uploaded to BytesPDF servers. Working blobs are not persisted in browser document storage.
Device, browser, extensions, downloaded output, and the eventual recipient still matter.
View details →Selected PDF content is processed in your browser. Device security, extensions, and the eventual recipient still matter.
Selected PDF content is processed in browser workers and is not uploaded to BytesPDF servers.
Processing uses your device instead of waiting for a PDF upload; time still depends on file complexity and available resources.
PDF content is processed locally and is not sent to BytesPDF servers. Your device and destination portal remain part of the security boundary.
No watermarks. Desktop files are capped at 150MB; mobile sessions use lower limits to protect browser memory.
Understand the processing model, practical limits, and checks that still matter.
29 direct answers about compression, quality and privacy, plus honest comparisons with the tools you are probably weighing up.
Learn best practices for PDF compression, security, and document optimization.
A passport scan fails for exactly four reasons: wrong resolution, grayscale instead of color, a cropped MRZ, or a file bigger than the portal allows. Here is how to get all four right, whether you own a scanner or only a phone.
Lenders ask every borrower for the same packet — pay stubs, W-2s, bank statements, tax returns, ID — but almost none publish an upload size limit. Here is the full checklist, where the real limits hide, and how to prepare each file.
Gmail's 25 MB limit is measured after encoding, not on your disk. Here is the number to actually aim for, and how to get a PDF under it.
ImmiAccount's rules are published and specific: 5 MB per file, 30 to 60 files per application, PDF/JPG/PNG only, and no ZIP archives or encrypted PDFs.
IRCC's per-file limit is 4 MB on most accounts and 5 MB on the Portal — and only one file is saved per field. Here is how to work inside both rules.
The US immigrant visa portal enforces roughly 2 MB per file. Here is how to get scans under it, what CEAC accepts, and the mistakes that cause repeat rejections.
