Convert anything.
Upload nothing.
Lindajzmin converts, compresses and formats your images and data right on your device — instant results, zero waiting rooms, total privacy.
- 5focused tools
- 0 KBsent to servers
- Offlineworks once loaded
Drop a file to get started
or choose a file — we’ll suggest the right tool
Stays on your device
Pick what you’d like to do:
Everything you need, nothing you don’t
Five sharp tools for the everyday chores of moving files between formats.
Image Converter
Convert images between JPG, PNG and WebP — batch, resize and fine-tune quality.
Image Compressor
Make images dramatically smaller with a live quality slider and before/after preview.
CSV to JSON
Turn CSV or TSV into JSON objects, arrays or JSON Lines with smart type detection.
JSON Formatter
Beautify, minify and validate JSON with exact error locations and syntax colours.
Base64 Encoder
Encode and decode Base64 text, turn any file into a data URL, and back into a file.
Three steps. About three seconds.
No queues, no progress bars waiting on a server somewhere.
Drop your file
Drag it in, paste it, or browse. It’s opened locally by your browser — never sent anywhere.
Tweak the options
Pick a format, drag the quality slider, choose an indent. The result updates live as you go.
Download & done
Save a single file, grab a ZIP of the whole batch, or copy the output straight to your clipboard.
Your files never leave your browser.
Most online converters upload your documents to a server you know nothing about. Lindajzmin works the other way around: the tool comes to your file. Open your browser’s network panel while you convert — you won’t see a single upload.
- On-device processingCanvas and JavaScript do all the work locally.
- No account, no trackingNo sign-up, no cookies, no analytics scripts.
- Works offlineLoad once, then pull the plug — it keeps working.
- Strips metadataRe-encoded images drop EXIF and GPS data.
Questions, answered
No. Lindajzmin has no server-side processing at all. Images are decoded and re-encoded with your browser’s built-in canvas, and text tools run in plain JavaScript. You can disconnect from the internet after the page loads and every tool keeps working.
It’s free with no sign-up, no watermarks and no daily limits. Because your own device does the work, there are no server costs to recover.
You can open anything your browser can display — JPG, PNG, WebP, GIF (first frame), BMP, SVG, ICO and AVIF in most modern browsers — and save as JPG, PNG or WebP. HEIC and TIFF usually can’t be decoded by browsers.
There’s no artificial limit; the practical ceiling is your device’s memory. Very large images (above roughly 30–40 megapixels) are scaled down to stay within browser canvas limits, and you’ll see the final dimensions before you download.
Yes. Re-encoding strips EXIF data such as GPS location and camera details, which is good for privacy. Orientation is applied to the pixels first, so photos stay the right way up.
Yes. Every drop zone is a focusable button (press Enter or Space to browse), options are standard form controls, results and notifications are announced through live regions, and the before/after slider responds to arrow keys.
Ready when you are.
Pick a tool and drop a file — there’s nothing to install and nothing to sign.
Start converting