Compress PDF
Reduce file size by removing redundant objects and optimizing the PDF structure.
- Pages are re-rendered as JPEG images — this is how file size is reduced
- Text becomes non-searchable after compression (embedded as an image, not selectable)
- Very fine text may soften on aggressive settings — use Printer preset if sharpness matters
- Best for scanned documents, photo-heavy PDFs, and files destined for portals or WhatsApp
72 DPI equiv.
150 DPI equiv.
300 DPI equiv.
How to Compress a PDF Online Free — For WhatsApp, Gmail & Government Portals
Compress PDF files instantly in your browser — no upload, no account, completely free. LovelyPDF is the fastest way to reduce PDF size for WhatsApp (under 100MB), Gmail attachments (under 25MB), or Indian government portals like IRCTC, DigiLocker, and Income Tax that require files under 1MB. Processing happens entirely on your device using pdf-lib — your files never leave your browser.
Step-by-Step Guide
- Upload your PDF by clicking or dragging it into the tool
- Select your compression quality — High, Medium, or Low
- Click Compress PDF and download your smaller file
Compress PDF for WhatsApp — India's Most Searched PDF Task
WhatsApp supports PDF files up to 100MB, but large PDFs often fail to send or take too long to download on mobile data. Use the Screen preset to compress your PDF instantly in the browser — no upload, no waiting for a server. Most scanned PDFs and image-heavy documents compress from 10–20MB down to under 2MB in seconds.
Compress PDF for Government Portals (IRCTC, DigiLocker, Visa, IT)
Indian government portals have strict file size limits. IRCTC requires documents under 1MB, DigiLocker and visa applications typically cap at 500KB–1MB, and the Income Tax portal rejects files above 2MB. Select the Screen quality preset for maximum compression. If your PDF is still too large after compression, try splitting it first using the Split PDF tool.
When to Use PDF Compression
Email attachments often have a 10MB or 25MB limit. Document submission portals frequently cap uploads at 5MB. Scanned PDFs from photocopiers often exceed these limits. Compressing reduces file size by 60—90% for image-heavy documents, making them easy to share without visible quality loss.
Common Use Cases
- Reducing scanned documents before emailing
- Shrinking large reports for portal submission
- Compressing photo-heavy brochures or presentations
- Reducing file sizes before archiving large document sets
- Compress PDF for WhatsApp — reduce PDF under 100MB for smooth sharing on Android and iPhone
- Compress PDF for Gmail — reduce PDF under 25MB to send as email attachment
- Compress PDF for government portals — IRCTC, DigiLocker, visa applications, Income Tax, EPFO often require files under 1MB or 500KB
Frequently Asked Questions
Will compression make my PDF text unsearchable?
Yes — pages are re-rendered as images, removing the text layer. Use High Quality if text sharpness matters, or use for scanned documents where text is already an image.
How much will my file size reduce?
Image-heavy and scanned PDFs typically reduce by 60—90%. Text-only PDFs may see less reduction.
Is there a file size limit?
No server-side limit. Very large files (100MB+) may be slow depending on your device.
How do I compress a PDF for WhatsApp?
Select the Screen preset (72 DPI) and click Compress PDF. This gives maximum compression and most PDFs will reduce well under WhatsApp's 100MB limit. The entire process runs in your browser — no upload required.
How do I compress a PDF for government portals like IRCTC or DigiLocker?
Use the Screen preset for maximum compression. For IRCTC and DigiLocker, your PDF needs to be under 1MB. For visa applications and Income Tax portals, typically under 500KB to 2MB. If compression alone is not enough, split the PDF first using the Split PDF tool.
Which preset should I use to compress PDF for Gmail?
Use the eBook preset (150 DPI) for Gmail. Gmail has a 25MB attachment limit. eBook quality gives a good balance of file size reduction and visual quality for most PDFs.
Related tools: Merge PDF · PDF to Image · Grayscale PDF