Free Tools for Marketers — No Upload, No Signup, No Watermark

Milo

For Marketers

"I'm not a marketer. But every marketer I know asked me for these tools — so I built them. Free. No upload. No email needed. — Milo 🐨"

If you do marketing work — content, social, brand, comms — you spend a non-trivial slice of every week on image grunt work: resizing for 8 platforms, removing backgrounds, compressing for email, splitting carousels. None of it is creative. All of it eats your morning. This page is a curated walkthrough of how ToolKoala speeds it up, with nothing leaving your browser.

The 3 tools you'll use most

If you only bookmark three pages from ToolKoala, make them these. They cover ~70% of marketing-team daily image work:

  • Social Media Resizer — One source image → 16 platform-correct sizes (Instagram Post/Story/Reel, Twitter Header, LinkedIn Banner, YouTube Thumbnail, TikTok, Pinterest). Drag the focal point to keep faces and logos in frame across every crop. Download all as a ZIP organized by platform folder.
  • Remove Background — AI background removal (IS-Net, running on your CPU via WebAssembly). About 8 seconds per image on a modern laptop. Essential for product shots, headshots, and composites. No subscription, no watermark, no upload.
  • Compress Image — Shrink a 5MB hero shot to 200KB without visible quality loss. Critical when you're emailing assets to a designer or beating the "file too large" CMS upload limit.

A real workflow: campaign hero shot → multi-channel posts

This is the sequence I see marketing folks run constantly. Say you have one 4K product photo from a campaign shoot. Here's how to turn it into 12 deliverables in 15 minutes — all in your browser:

  1. Strip the background with Remove Background. Save the transparent PNG as your "master."
  2. Add a clean background with Change Background — solid color or gradient that matches the brand palette.
  3. Generate platform sizes with Social Media Resizer. Set the focal point on the product, check all platforms you publish to, download the ZIP.
  4. Build a carousel post: take a wider variant of the hero shot, drop it into Carousel Maker, split into 3-5 slides.
  5. Refresh the profile: if it's a brand-update moment, drop the logo into Profile Picture Cropper for circle-ready outputs across 8 platforms.
  6. Compress for hand-off: send finals to copywriter or designer using Compress Image (email) or PDF Compress (decks).

End result: 12 files across 6 platforms — none of them ever uploaded to anyone's server.

Full marketing toolkit (by use case)

📸 Visual asset creation

📐 Social resizing & cropping

📦 Compression for sending

🔄 Repurposing & format conversion

  • Video to GIF — Short clips for X or LinkedIn auto-play
  • Convert Image — HEIC → JPG / PNG / WebP, and JPG ↔ PNG ↔ WebP (fix iPhone photos for Windows partners)
  • PDF to Image — Extract deck pages as JPG for previews
  • Image to PDF — Bundle screenshots into a single PDF for clients
  • EXIF Remover — Strip location and camera metadata before publishing

"Should I just use Canva?"

Honest answer: use Canva for design, ToolKoala for the boring math.

Canva is great when you're composing something — picking layout, fonts, colors. It's not great when you've already made the image and you need 12 sizes of it, or you need to strip a background, or you need to compress without losing quality. Canva puts some of those behind Pro: its background remover and Magic Resize are paid features.

The other awkward fit for Canva: when your boss sends you the company holiday photo and says "put this on every channel by 3pm." You don't want to redesign anything. You want to crop it 16 ways and ship. That's what these tools are for.

Frequently asked

Can I use these tools for commercial work?

Yes — free for personal and commercial use, no licensing fees. Tools run in your browser, so client files never touch a server. You retain all rights to the output. There's no "free for personal use only" tier here.

What's the max file size I can process?

It depends on your browser's available memory. Most tools comfortably handle 50-200MB files. Background removal slows past ~4K resolution. Video compression runs on your CPU alone — FFmpeg compiled to WebAssembly, one thread, no graphics card involved. I timed a 1080p clip on a 2024 laptop at about 2 minutes of processing per minute of footage; older machines take longer, so trim first if you only need part of it.

Can I batch-process multiple files?

Yes, for the everyday ones: Compress Image, Convert Image, Resize, Rotate, Add Watermark, Filters, Adjust and EXIF Remover take a whole drop of photos and hand back one ZIP. Remove Background works one image at a time — the model is slow enough per photo that a queue would just look frozen. Social Media Resizer and Carousel Maker take one source image and give you a ZIP of everything made from it.

What about AI-generated content rights?

The AI tools (background removal, etc.) run locally in your browser using open-source models. They process your file but don't train on it, store it, or claim any rights to the output. You own what you make.

How do I prove my files aren't uploaded?

Open Chrome DevTools → Network tab → drop a file into any tool. You'll see code loading (cached after first use), but no request body containing your file bytes. This is verifiable, not a trust-me promise. Privacy claims you can audit.

Bookmark this page. 80% of day-to-day marketing image work is on it.

Or jump straight to Social Media Resizer →

— Milo 🐨 · [email protected]