Compress PDF
Reduce file size by recompressing images. Choose what matters most to you.
- Image-heavy pages are re-rendered as JPEG — this is the primary way file size is reduced
- With Keep text sharp, text-only pages are copied losslessly — text stays selectable and vector-crisp
- All other modes rasterise every page — text becomes non-selectable but files are smaller
- Best for scanned documents, photo-heavy PDFs, and files for WhatsApp or government portals
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
- Choose what matters most — Smallest File, Keep Text Sharp, Keep Images Sharp, or Balanced
- Fine-tune the secondary controls if needed
- 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 Smallest File Size 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 Smallest File Size 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?
It depends on the mode. Keep Text Sharp with the lossless option copies text pages without rasterising them — text stays selectable. All other modes re-render pages as images, removing the text layer.
How much will my file size reduce?
Image-heavy and scanned PDFs typically reduce by 60–90%. Text-only PDFs may see less reduction, especially in Keep Text Sharp mode where those pages are copied losslessly.
Is there a file size limit?
No server-side limit. Very large files (100MB+) may be slow depending on your device. Pages are processed in batches so even 500+ page PDFs can complete without crashing.
How do I compress a PDF for WhatsApp?
Select Smallest File Size and set aggressiveness to Smallest. 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 Smallest File Size with 72 DPI for maximum compression. For IRCTC and DigiLocker your PDF needs to be under 1MB. 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 Balanced at 150 DPI for Gmail. Gmail has a 25MB attachment limit. Balanced gives a good compromise of file size and visual quality for most PDFs.
Related tools: Merge PDF · PDF to Image · Grayscale PDF