Mail File Viewer vs 100KB Developer

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Mail File Viewer compared with 100KB Developer
Detail	Mail File Viewer	100KB Developer
What it does	Read email files privately in your browser with no upload	Client-side WebAssembly SDK for compressing images and PDFs in the browser before upload
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	IN
Pricing model	Free	Not given
Pricing	Not given	Developer Free: $0/forever with unlimited client-side WASM engine, zero-config, target KB file bisection, and default "Powered by 100KB" backlink. Commercial License: $19/month (or $149/year, save 35%) for 100% unbranded license, automated domain whitelist lock, and high-precision biometric passport
Key features	Read winmail.dat and EML files in browser View embedded images safely Preview PDF attachments Download attachments individually or as ZIP No file uploads to server Display sender, date and message content	Target KB bisection - compresses files to exact size caps (50KB, 100KB, 200KB) Vector-preserving PDF compression - shrinks PDF streams while preserving text and fonts ICAO biometric passport photo cropping - 70% head ratio for visa compliance AI background removal - neural network-based transparent PNG cutouts Signature contrast sharpening - cleans signatures under 20KB Parallel batch processing - processes 100+ files concurrently without UI freezing AWS S3 and Cloudflare R2 integration - 1-line wrapper for cloud storage uploads Format conversion - HEIC to JPG, PNG to JPG, JPG to PNG, image to PDF PDF manipulation - merge, split, convert PDF to Word Stamp and watermark removal - removes scanner artifacts and digital stamps
What makes it different	All processing happens in your browser with no uploads Private handling of email attachments Outlook hides Safe display of external images with user permission	0ms cloud latency - all processing happens locally in browser RAM with no server involved Reduces AWS S3 bills by 85% - shrinks 15MB uploads to 100KB before upload Unified SDK replacing 5 open-source packages - single solution for PDF, image, and AI tools 18+ media and document engines included - comprehensive toolkit from compression to biometrics
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	1 no change since last check
Trust Flow (Majestic)	2	2
Citation Flow (Majestic)	19	21
Referring domains (Majestic)	6	28

3 details filled in for both companies.

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