Edit, Merge & Convert Files
Instantly in Your Browser
No registrations, no subscriptions, and no file size limits. Select a tool below to get started immediately.
Merge PDF Files
Combine multiple PDF documents in your preferred order.
Drop PDF files here, or browse
Select 2 or more files to combine
Client-Side File Processing Explained
Unlike conventional document conversion services that require sending your personal documents to remote web servers, InstantFileTools utilizes WebAssembly and the native HTML5 Canvas API to perform every single operation locally on your device.
Local RAM Security
Your files reside strictly in temporary browser memory and are discarded once downloaded.
Zero Network Lag
Processing happens instantly using your device processor, bypassing upload/download delays.
No Paywalls
No subscriptions, rate limits, or hidden fees. Use all tools freely without limitation.
Frequently Asked Questions
How do I compress an image to under 50 KB or 20 KB for online portals?
Select the Compress tool, drag the quality slider down to around 30–50%, and download your compressed file. If you also need specific pixel dimensions, use the Resize tool.
Can I merge encrypted or password-protected PDF files?
For security reasons, password-protected PDFs must be unlocked before merging. Standard unencrypted PDFs of any page count are fully supported.