Blog
Step-by-step guides for image and PDF tools, plus marketplace playbooks for Amazon, Meesho, and Flipkart sellers.
PDF Guides
How to merge and split PDF files in bulk
Combine invoices or split scanned pages into separate files — reorder before merge, download ZIP after split.
PDF Guides
How to use PDF tools on The Bulk Toolkit
Merge, split, compress, convert, watermark, rotate, extract, protect, and unlock PDFs — registered accounts, server processing, and plan limits explained.
How-to Guides
How to resize, compress, and convert images in bulk
Step-by-step guide to The Bulk Toolkit browser tools — upload, preview thumbnails, process, and download a ZIP.
PDF Guides
How to convert PDF to JPG and JPG to PDF
Export PDF pages as images for slides and social posts, or combine JPG scans into one shareable PDF.
PDF Guides
How to compress a PDF for email and uploads
Reduce PDF file size with quality presets — Ghostscript on the server when available, smart fallback otherwise.
How-to Guides
How to bulk watermark images with your logo
Upload your logo, place it with presets or custom drag-and-resize, then watermark an entire folder in one ZIP.
PDF Guides
How to password-protect and unlock a PDF
Secure sensitive PDFs with a password or remove protection when you have the current password.
PDF Guides
How to watermark, rotate, and extract PDF pages
Mark drafts as confidential, fix scanned orientation, or pull page ranges without splitting every page.
How-to Guides
How to remove backgrounds from images in bulk
Upload up to 5 images per job (Free) or 20 (Premium), run BiRefNet on our servers, and download transparent PNGs in a ZIP.
Amazon Seller Guides
Amazon main image checklist for 2026
A practical checklist plus a bulk workflow to resize and compress catalog photos before upload.
Meesho Seller Guides
Meesho catalog image sizes that reduce rejections
Standardize Meesho catalog dimensions and compress for mobile buyers — with a step-by-step batch workflow.
Flipkart Seller Guides
Flipkart image guidelines: a seller-friendly primer
Prepare Flipkart-ready imagery with bulk resize, convert, and compress — step by step.
Image Optimization
Image optimization without a server round-trip
Why browser-side bulk processing is faster and cheaper — and when to use server-side AI background removal.