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FormatMath VS FormatFlash

Compare FormatMath VS FormatFlash and see what are their differences

FormatMath

Convert HEIC, WebP, PNG, JPG, RAW, PSD, TIFF and PDF files right in your browser. Merge, split and compress PDFs. Free, no upload, no sign-up.

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0 reviews
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FormatFlash

Convert HEIC, JPG, PNG, and WebP images in seconds — free, private, no upload. All conversion happens locally in your browser.

Rating
0 reviews
Pricing
Free
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Tokino
Work toward more AI recommendations for your home-service business. Start with a free scan; Core checks your progress every week. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

File Management popularity
100% vs 0%
alternatives listed
6 vs 8

Base details

Website, pricing, platforms and company facts side by side.

FormatMath
FormatFlash
Website formatmath.com formatflash.com
Pricing —
Free Official pricing
Company Startup from Ukraine · 2026 Startup from Germany · 2026
Listed in
File Converter File Management Developer Tools PDF Tools AI Image Generator Image Marketplace AI +4
File Manager Heic Converter PDF Converter Image Converter Free Online Tools +2

About FormatMath and FormatFlash

In their own words, as submitted to SaaSHub.

FormatMath
FormatFlash

👋 I'm Vitaliy, and I built formatmath: a free file converter with no limits. Here's the idea behind it. Almost every online converter works the same way: you upload your photo or document to their server, they convert it there, and you download the result. That means your private files...

Read more about FormatMath

FormatFlash is a fast, privacy-focused online file converter designed to process your files entirely inside your web browser. Traditional online converters upload your personal images and documents to remote servers, but FormatFlash runs 100% client-side — ensuring your files never leave your...

Read more about FormatFlash

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
FormatMath
FormatFlash
100% 100%
File Management
0% 0%
0% 0%
File Manager
100% 100%
100% 100%
Image Marketplace
0% 0%
0% 0%
PDF Converter
100% 100%

Questions & Answers

As answered by people managing FormatMath and FormatFlash.

Why should a person choose your product over its competitors?

FormatMath's answer

Privacy and no limits. Popular converters like CloudConvert, Convertio, FreeConvert or Zamzar upload your files to their servers and limit free use by file size, number of conversions or waiting time. FormatMath converts locally, so private photos, scans and documents stay on your device, and you can batch-convert hundreds of files and download them as one ZIP for free. It also covers formats many converters skip, such as camera RAW (CR2, CR3, NEF, ARW, DNG and more), PSD, JPEG XL and CBZ.

Who are some of the biggest customers of your product?

FormatMath's answer

Individual users (no accounts required, so we don’t track customers)

What makes your product unique?

FormatMath's answer

Every tool runs entirely in your browser. When you convert a file, it’s read and processed on your own device and saved straight back to it, so it’s never uploaded and our server never sees it. Because there’s no server-side processing to pay for, there are also no file size caps, no daily limits, no watermarks and no sign-up. It works offline once a page has loaded.

How would you describe the primary audience of your product?

FormatMath's answer

iPhone users who need HEIC photos as JPG for websites, forms and Windows PCs Photographers who need quick JPG previews from camera RAW files Office workers and students who merge, split, rotate or compress PDFs Privacy-conscious people who don’t want to upload personal files to a server Developers who need quick JSON, YAML, CSV, Base64, UUID or regex tools

What's the story behind your product?

FormatMath's answer

I kept needing to convert iPhone photos and PDFs, and every online converter wanted me to upload private files to an unknown server, then limited me by file size or number of conversions. Modern browsers can decode and encode most formats themselves, so I built FormatMath to do all the work on the user’s device instead. It started with HEIC to JPG and grew into image, RAW, PDF, compression, photo-privacy and developer tools, in English and Ukrainian. I also run fee-math.com, a set of free fee calculators for online sellers built on the same no-upload principle.

Which are the primary technologies used for building your product?

FormatMath's answer

TypeScript and Astro (static site) Cloudflare Workers and D1 (hosting, blog and anonymous usage stats) WebAssembly codecs (libheif for HEIC, jSquash for JPEG XL and WebP) pdf.js and pdf-lib for PDF rendering and editing Canvas and Web Workers for in-browser image processing fflate (ZIP), UTIF (TIFF), ag-psd (Photoshop files), exifr (metadata), yaml

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Alternatives to FormatMath and FormatFlash

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