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Online Convert VS FormatMath

Compare Online Convert VS FormatMath and see what are their differences

Online Convert

Convert files like images, video, documents, audio and more to other formats with this free and fast online converter.

Rating
0 reviews
Promote on VibeVoted
Alternatives Is it good?
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.

Rating
0 reviews
Promote on VibeVoted
Support its launch · 0 supporters
Alternatives Is it good?
Modelence
Create production-ready applications with zero code sponsored

Which is more popular?

Based on our record, Online Convert seems to be more popular. It has been mentioned 5 times since March 2021.

social mentions
5 vs 0
File Converter popularity
100% vs 0%
alternatives listed
240+ vs 6

Base details

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

Online Convert
FormatMath
Website online-convert.com formatmath.com
Pricing
Official pricing
—
Company — Startup from Ukraine · 2026
Listed in
File Converter PDF Tools Video Converter File Sharing +1
File Converter File Management Developer Tools PDF Tools AI Image Generator Image Marketplace AI +4

About Online Convert and FormatMath

In their own words, as submitted to SaaSHub.

Online Convert
FormatMath

No description of Online Convert yet.

👋 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

Features and specs

What each product offers, as listed by its team.

Online Convert 6 features
FormatMath 0 features
  • User-Friendly Interface
    The website is designed to be straightforward and easy to use, making it accessible even for those with limited technical skills.
  • Variety of Formats
    Supports conversion between a wide range of file formats, including documents, images, audio, video, and more.
  • No Software Installation
    All conversions are done online, eliminating the need for downloading and installing software on your computer.
  • Free to Use
    Offers a free-tier service that allows users to convert files without any cost.
  • Quick Processing
    The conversion process is generally fast, allowing users to quickly obtain their converted files.
  • Accessibility
    Being an online tool, it can be accessed from any device with an internet connection.

Possible disadvantages

  • File Size Limitation
    Free-tier users may face limitations on the size of the files they can upload and convert.
  • Ads
    The free version of the service is supported by advertisements, which can be intrusive at times.
  • Privacy Concerns
    As files need to be uploaded to the server for conversion, there could be concerns about data privacy and security.
  • Internet Dependency
    Requires a stable internet connection to use the service, which can be an issue for users with poor connectivity.
  • Advanced Features
    Advanced features and higher file size limits are only available through a paid subscription.
  • Quality Variability
    The quality of converted files can sometimes be inconsistent, depending on the original file and the desired format.

No features have been listed yet.

Analysis

An editorial look at what each product does well and who it suits.

Online Convert
FormatMath

Overall verdict

  • Online Convert is considered a good choice for users who need a reliable and efficient online file conversion tool. While some users may prefer desktop applications for more intensive tasks, Online Convert meets the needs of most users looking for quick and easy conversions.

Why this product is good

  • Online Convert is a popular tool due to its wide range of supported file formats and ease of use. It allows users to convert various types of media, including audio, video, images, documents, and more, without requiring any software installation. The platform offers a straightforward interface and typically handles conversions quickly. Additionally, it provides advanced options for customizing output settings.

Recommended for

    Online Convert is recommended for individuals or businesses that need to perform occasional file conversions without installing additional software. It's ideal for users who prioritize convenience and versatility in terms of supported file formats.

No analysis of FormatMath yet.

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
Online Convert
FormatMath
100% 100%
File Converter
0% 0%
0% 0%
Developer Tools
100% 100%
98% 98%
PDF Tools
2% 2%
0% 0%
File Management
100% 100%

Questions & Answers

As answered by people managing Online Convert and FormatMath.

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

User comments

Share your experience with using Online Convert and FormatMath. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Online Convert 5 mentions
FormatMath 0 mentions
  • help me please
    I've totally used online conversion tools, so I'm not knocking them entirely (I've personally used online-convert.com for years now). Assuming no personal information, using them for a quick conversion for images or documents is great... Source: over 3 years ago
  • Best way to convert .mkv to .mp4?
    Online-Convert for Web is a service that's trusted by many big brands and that I use for a lot of stuff, and it's worked very well for me. Only thing is you can't convert YT videos. Source: almost 5 years ago
  • Can no longer save images from Poshmark?
    Add the extension "online-convert.com" to Chrome. When you run across an image like this right click and scroll down to the "file converter" option, then select "convert image to image". You'll have the option of converting it to many... Source: almost 5 years ago

View more

Tracking FormatMath since Nov 2026.

Alternatives to Online Convert and FormatMath

When comparing Online Convert and FormatMath, you can also consider the following products.

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