Browser File Tools You Can Verify, Not Just Trust

OnlinePCApps is a browser-based file toolkit that has run conversion, viewing and backup work on your own device since 2013. Here is the evidence behind that, including the parts that do not flatter us.

2013Building file tools since
115Tools in the catalogue
55Email conversion routes
2Staffed offices
The Architecture

Privacy Here Is Structural, Not a Promise

Most tools ask you to trust a policy. This one removes the server that the policy would govern.

A conventional online converter posts your file to a server, runs the job there and hands back a download. Everything after the upload depends on somebody honouring a retention policy you cannot inspect.

Our tools compile the conversion logic to WebAssembly and run it inside the page. The file is read from disk by the browser, held in memory on your machine and written back out from there. There is no endpoint that receives it, which is a different kind of guarantee to a promise that an endpoint will behave.

The chain is ordinary browser machinery. JavaScript and WebAssembly do the parsing, the FileReader API opens the file from disk, Web Workers keep large jobs off the main thread, the Canvas API handles image work and the Web Crypto API covers hashing and AES encryption. Not one of those steps is a network call.

You do not have to believe any of this. Open your browser developer tools, switch to the network panel and run a file through any tool here. Nothing carrying your data leaves the page.

ChromeFirefoxSafariEdgeWindowsmacOSLinuxChromebook
The People

The Team Behind Every Tool on the Site

The engineers who write the format parsers behind these tools.

Robert Smith, OnlinePCApps Robert Smith Senior File Format Engineer Email and MIME
Olivia Grace Taylor, OnlinePCApps Olivia Grace Taylor Systems Programmer PDF and Disk Structure
Melokuhle, OnlinePCApps Melokuhle Browser Engineer Image and Codecs
The Engineering

We Implement Published Standards, Not Guesses

Mail formats are specified in public documents. Reading them properly is most of the work.

RFC 5322 Internet Message Format. Defines the header block every EML, MSG and MBOX converter has to parse correctly before it can preserve a thread. RFC 2045 The first MIME document. Sets out how a message carries attachments and alternate body parts, which is what survives a PST or OLM conversion. RFC 2047 Encoded-word syntax. Without it, any header written outside plain ASCII decodes into unreadable byte sequences after conversion. RFC 4155 The application/mbox media type. Informational rather than a standard, and it states plainly that mbox has no authoritative specification, which is why implementations disagree. RFC 6350 vCard 4.0. Defines the contact fields our VCF tools read and write. RFC 5545 iCalendar. The event and recurrence rules behind the ICS tools.

Each link opens the specification itself at the RFC Editor. We would rather you check our reading of them than take our word for it.

The Accountability

Who Is Accountable for These File Tools

Plenty of file tools are anonymous. Here is who is behind this one and where to find them.

India International Financial Centre, IFC Tower, 31st Floor, Tower-1 Golf Course Ext Rd, Sector 66, Gurugram, Haryana 122101 Engineering and recovery lab
United States 75 State Street, Ste 100 Boston, MA 02109 Business and correspondence
Email the team support@onlinepcapps.com Live chat Opens from the header on every page Contact page Both office addresses and a form
The Honest Part

What Browser Tools Are Genuinely Bad At

Running in a tab is right most of the time. These are the times it is not.

Very large archives A tab has a memory ceiling. Past several gigabytes, a large Outlook PST or Exchange EDB needs the desktop build.
Live server access Pulling mail over IMAP from Gmail, Outlook.com or Thunderbird is a network job by definition.
Partly documented formats Where support for a legacy format is incomplete, the tool page says which parts work.
Encrypted files Without the password nothing opens it, and any tool claiming otherwise is guessing.
GDPR alignedDMCA protectedTLS in transitNo server-side retention
The Commitments

Four Commitments Behind Every Free Tool

Stated plainly so you can hold us to them.

No advertising The tools carry no ad slots, no trackers sold to a network and no sponsored placements.
No account to start Every tool runs without an email address. We cannot build a profile on someone we never identified.
No file retention There is no server-side copy to retain, so there is no deletion schedule to trust.
Published policies Privacy, refund and licence terms are linked in the footer of every page rather than buried.
Next

Try the File Tools for Yourself

The argument above is only worth something if the tools hold up.

Start With a ToolThe full catalogue, from a two-file PDF merge to a whole mailbox migration.Email ConvertersThe busiest corner of the site, and where the format work shows most clearly.The Longer StoryHow a desktop recovery team ended up writing tools that run in a browser tab.