Replace Image in PDF
Cover an image on a PDF page with a new image of your choice (overlay-based).
Cover an image on a PDF page with a new image of your choice (overlay-based).
Replace Image in PDF covers an existing image (or any rectangular region) on a PDF page with a replacement image — great for updating logos, product shots, signatures or figures without the source document.
Use Extract Images from PDF first — the extracted image's shown dimensions are the width/height you want here.
Cloud-based PDF editors ask you to upload sensitive invoices, contracts or passport scans to servers you will never see — and then offer a "premium" plan to remove watermarks they added themselves. toolsfy turns that model upside down: every PDF operation on this page runs locally in your browser using the same modern Web APIs Chrome, Edge and Firefox ship with. Your file never leaves the device, no account is required, and there is no artificial cap on pages or size.
No. Every operation happens inside this tab using the PDF-lib / pdf.js libraries loaded from a public CDN. The file bytes never travel to a toolsfy server.
The only limit is your device's available memory. A mid-range laptop handles hundreds of pages comfortably; a phone handles smaller files well but may slow down past 50 MB.
No. A modern browser is all you need. The output PDF is standards-compliant and opens in Acrobat, Preview, Foxit and every other mainstream reader.