JustPDF vs Proofapp

Side-by-side comparison to help you choose the right product.

JustPDF is a privacy-first PDF toolkit with 17 free tools including merge, split, compress, convert, sign, and OCR.

Proofapp enables teams to leave visual feedback directly on website screenshots, streamlining design reviews.

Last updated: March 3, 2026

Visual Comparison

JustPDF

JustPDF screenshot

Proofapp

Proofapp screenshot

Overview

About JustPDF

JustPDF provides 17 professional-grade PDF tools that process files entirely in the user's browser. Unlike Smallpdf, iLovePDF, and other online PDF tools that upload files to remote servers, JustPDF uses JavaScript and WebAssembly to handle everything locally on the device. Files never leave the browser — verifiable by checking the Network tab in DevTools. Tools include: Merge PDF, Split PDF, Compress PDF, Rotate PDF, Flatten PDF, Unlock PDF, PDF to Word, Word to PDF, PDF to JPG, JPG to PDF, PDF to Excel, WebP to PDF, HEIC to PDF, PDF to Grayscale, Sign PDF, Chat with PDF (AI), and OCR/Scan. No account needed for the free tier (3 ops/day). Pro starts at $4/month for unlimited access. FERPA-compliant for educational use.

About Proofapp

Proofapp is a revolutionary visual feedback and website review platform designed to enhance collaboration between designers, developers, and their clients. By allowing users to upload any website URL, Proofapp automatically captures screenshots for both desktop and mobile views, facilitating seamless visual communication. The platform empowers reviewers to pin comments directly onto the design, initiate threaded discussions, attach relevant files, and resolve feedback — all without requiring an account. This ease of use significantly reduces the chaos of email chains and vague revision notes. With features like real-time notifications, Slack integration, multi-page support, and customizable accent colors, Proofapp is ideal for freelancers, agencies, and teams looking to streamline their design process. Whether collecting client feedback or managing multiple projects, Proofapp transforms feedback into a visual, organized, and actionable format, drastically improving productivity and clarity in design revisions.

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