Stop uploadingyour private filesto random servers.
Every tool you need works right here in your browser. Your files never leave your device.
The trap
Most free online tools quietly send your files to their servers. Once they’re up there, you’ve no idea who sees them.
The fix
Toolspark does it all on your own device. Your files never go anywhere, so no one can see, save, or leak them.
54 tools, sorted by the job you need done.
Pick a category to see what’s inside. Every tool opens instantly and runs right here in your browser — no install, no account, no upload.
Media Forge
Compress, resize and reformat images on your own device. No watermarks, no server round-trips.
- WiFi File TransferTransfer files from phone to PC, PC to phone or phone to phone over WiFi. Scan a QR code to connect — no app, no cable, no upload and no file size limit.
- Placeholder GeneratorPlaceholder image generator: make PNG or SVG placeholders at any size, colour and label, with presets for banners, avatars and social cards.
- Matte GeneratorAdd a white border to a photo, or a colour, blur or gradient frame, so it fits square, 4:5 portrait or 9:16 story posts uncropped.
- Social Media CropperResize an image for Instagram, Bluesky or Threads: crop to 1:1, 4:5, 1.91:1, 9:16 and more at full resolution, right in your browser.
- Seamless Scroll GeneratorInstagram carousel splitter: slice a wide panorama into square or 4:5 portrait panels that scroll seamlessly across swipes.
- WatermarkerAdd a watermark to a photo: place your logo or any PNG over an image with position, size, padding, opacity and blend mode controls.
Your files never leave your device.
Most free tools make you upload a file so their server can do the work. Toolspark flips that: the tool comes to your file, and runs inside the browser tab you already have open.
Most online tools
Upload required- Your file is uploaded to a stranger's server
- A copy can be kept, logged or leaked
- Often wants an email or account first
Toolspark
Stays on your device- Your file is opened by your own browser
- The work runs on your device's processor
- Close the tab and nothing is left behind
- Step 1
Pick a file
Drop it in or choose it. Your browser reads it straight from your disk into the page.
- Step 2
The tool runs in the tab
Converting, resizing, checking — all computed locally. No request carries your file anywhere.
- Step 3
Save the result
The finished file downloads from memory back to your device. That's the whole round trip.
Don’t take our word for it.Open your browser’s developer toolsF12, watch the Network tab, and run any tool. Your file never shows up there.
Tell uswhat tocontact usbuild next.
Don't take our word.
Take theirs.
Real people, real tools, nothing uploaded. Here's what they think after giving Toolspark a try.
Drag a card to shuffle
“Formatted a config full of API keys and watched the network tab stay empty. That's the whole pitch, delivered.”
Placeholder — replace me
Role / handle
“No signup, no upload, no nags. Opened the tool, did the thing, closed the tab.”
Placeholder — replace me
Role / handle
“Fast, private, and it just works offline once the page loads. Exactly what a browser tool should be.”
Placeholder — replace me
Role / handle
Toolspark
Free browser tools, nothing uploaded
Forever