Apply compression, rotation, or grayscale to multiple PDFs.
View any PDF file inside a clean HTML container.
Convert HTML files, raw code, or screenshots to PDF.
PDF Merger Tool: Combine Multiple PDFs Instantly: practical Tools guide with use cases, quality checks, and next steps on AltFTool.
1,100+ browser utilities for files, images, text, data, and more.
Reduce file size dramatically while keeping crisp quality. Batch process and compare before/after instantly.
Apply standard CSS filter properties (blur, grayscale, sepia, invert, hue-rotate) visually with live image preview and clean CSS exports.
Compare learning platforms and build skills.
Finance, health, math, and everyday calculators.