Guide
When Browser-Only File Tools Beat Upload Tools
A browser-only tool is the better default for a normal PDF, image, ZIP, or JSON file you would not want to hand to a conversion server. Confiles runs those jobs in the tab. An upload site is not automatically the safer fallback: some files this site cannot open, and a desktop app on your own computer is a better next step than sending them to a random server.
Quick answer
Use Confiles when the task is one of the tools on this site and the file fits in your browser. Do not use it for an encrypted PDF, and do not expect it to replace a desktop app for a huge scan that makes the tab run out of memory.
What stays on the device
Choosing a file in a tool reads it in the browser. Compressing a PDF, merging pages, converting a PNG to JPG, or formatting JSON does not send that file to a Confiles server. There is no account the file could be saved to.
The word upload on a button means choose a file from your computer or phone. It does not mean the bytes are posted to us. The download is a new file next to your original.
What an upload tool does instead
A typical online converter asks you to send the file to their server, waits, then gives you a download link. That can be fine for a public screenshot. It is a poor fit for an application, a medical form, a contract, or an ID scan.
You also depend on their retention rules, their outage, and their file-size cap. A browser tool has a different cap: the memory of the tab you already have open.
When the browser tool is the wrong one
Encrypted PDFs are rejected. Unlock them yourself, then use the unlocked copy. This site will not ask you for the password in order to store it.
Very large scans can fail or stall because the browser runs out of memory. Use a desktop program on your own computer for those. Sending the same private scan to an unknown upload site is not the safer fallback.
Some jobs are simply not on this site. HEIC photos, video, and office formats other than the spreadsheet and image tools you see in the list are out of scope. Check the tool page before you assume a conversion exists.
Browser-only also does not mean the website has no third parties. Pages can load Google Tag Manager, Google Analytics, AdSense, and Google Fonts. Those services may see the page address and a normal browser request. They do not receive the file you process in a tool. The privacy policy explains that split.
Steps
- 1.Find the tool that matches the job, such as Compress PDF, Merge PDF, or Convert Image.
- 2.Use it for files you would not want to email to a stranger, as long as the tool says it can open that format.
- 3.If the PDF is password-protected, unlock it on your device first.
- 4.If the tab cannot handle the file, switch to a desktop app you install yourself rather than an upload site.
FAQ
Does browser-only mean the site has no ads or analytics?
No. File processing and site measurement are separate. Tools run locally. The site can still load Google Tag Manager, Analytics, and AdSense, as the privacy policy describes.
Is a browser tool always more private than a desktop app?
Not always. A desktop app that never leaves your computer is also private. The comparison that matters here is against websites that require you to upload the file to their server.
What if I need a conversion Confiles does not offer?
Do not force the file through the wrong tool. Use software on your own computer, or a service whose privacy terms you have actually read.