What Each Tool Is Actually For
Optimizilla is a simple, single-purpose online image compressor. Upload JPG or PNG files, adjust the quality slider for each image using a side-by-side before/after preview, and download the result. It has been popular since the early 2010s for its clean interface and the visual quality control it provides. All processing is done server-side -- your images are uploaded to Optimizilla's servers and returned as compressed files.
TinyPNG Now is a browser-based image suite with 26 tools. Image compression is the core feature, but the platform also handles background removal, AI upscaling, resizing, cropping, rotating, face blurring, EXIF removal, watermarking, format conversion, and more. All processing runs locally in your browser using WebAssembly -- your images never leave your device.
💡 Key insight: Optimizilla's real advantage is its per-image quality slider with live preview. If you need to fine-tune each image individually before committing to a compression level, that visual control is genuinely useful. For everything else -- formats, batch size, privacy, tools -- TinyPNG Now is the stronger choice.
Format Support
Optimizilla supports JPG and PNG only. There is no WebP input or output, no HEIC support for iPhone photos, no GIF, no AVIF, no BMP or TIFF. If you receive a .heic photo from someone's iPhone and want to compress it, Optimizilla cannot help. If you want to convert images to WebP for better web performance, Optimizilla cannot do that either.
TinyPNG Now supports PNG, JPG, JPEG, WebP, AVIF, GIF, BMP, TIFF, ICO, and HEIC as input formats. It can output WebP, maintaining the smallest possible file sizes for web delivery. HEIC files from iPhones compress and convert natively without any pre-conversion step.
✅ Winner: TinyPNG Now -- full format support including HEIC, WebP, and AVIF. Optimizilla is restricted to JPG and PNG.
Batch Size and Download Options
Optimizilla limits each compression session to 20 images. To compress 60 product photos, you need three separate sessions. There is also no ZIP download -- each compressed image must be downloaded individually by clicking its own download button. For a batch of 20 images, that is 20 separate clicks.
TinyPNG Now has no batch limit. Drop 200 images at once, compress all simultaneously (local processing means no queue), and download everything with a single "Download All as ZIP" button. For any workflow involving more than a handful of images, this difference in friction is significant.
✅ Winner: TinyPNG Now -- unlimited batch size and one-click ZIP download. Optimizilla's 20-image limit and individual downloads add friction for any meaningful volume.
Privacy and File Handling
Optimizilla uploads all images to its servers for compression. The files are processed in the cloud and returned via a temporary download link. For personal photos, client work, or any image you would prefer to keep private, this upload represents a data exposure point. Optimizilla's privacy policy notes files are deleted after a short period, but the transmission still occurs.
TinyPNG Now runs the entire compression pipeline in your browser. The WebAssembly compression engine processes your image file data locally, within your browser's memory, and saves the output directly to your downloads folder. No network request is made for image compression. This is particularly relevant for healthcare, legal, finance, or enterprise environments where uploading files to third-party cloud services is restricted.
✅ Winner: TinyPNG Now -- zero uploads, full browser-local privacy. Safe for confidential and sensitive image work.
Compression Quality
Optimizilla's quality slider is its strongest feature. For each uploaded image, you can drag a slider and see a real-time before/after preview of the compressed output before downloading. This gives you precise manual control over the quality-to-size tradeoff per image. The compression algorithm is decent, achieving 30–80% size reduction on JPG and PNG files.
TinyPNG Now's compression achieves up to 95% size reduction -- typically stronger than Optimizilla on both JPG and PNG. The quality control is global rather than per-image, which is faster for batch work but less granular than Optimizilla's per-image slider. For users who need to inspect each image individually and fine-tune its quality, Optimizilla's interface provides a workflow TinyPNG Now does not replicate directly.
✅ TinyPNG Now wins on compression ratio -- up to 95% vs Optimizilla's 30-80%. Optimizilla wins on per-image quality control -- the visual slider and preview is more granular. Choose based on your workflow.
Extra Tools
Optimizilla is a single-tool compressor. Once you have compressed your images, anything else -- resizing, background removal, format conversion, adding a watermark -- requires opening a different tool or website.
TinyPNG Now offers 25 additional tools beyond compression, all free and all browser-local: Image Resizer, Background Remover, AI Upscaler, Face Blur, EXIF Remover, Watermark Tool, Image Cropper, Rotate & Flip, Social Media Resizer, QR Code Generator, OCR (Image to Text), and more. The full image workflow is available in one place.
✅ Winner: TinyPNG Now -- 26 tools vs Optimizilla's single-purpose compression. No need to switch tools for resizing, background removal, or format conversion.
Head-to-Head Summary
| Feature | TinyPNG Now | Optimizilla |
|---|---|---|
| Privacy (no upload) | ✅ Browser-local WINNER | Server upload required |
| Format support | ✅ PNG, JPG, WebP, HEIC, AVIF, GIF+ WINNER | JPG and PNG only |
| Batch limit | ✅ Unlimited WINNER | 20 images max |
| ZIP download | ✅ One-click ZIP WINNER | Individual downloads only |
| Compression ratio | ✅ Up to 95% WINNER | 30-80% |
| Per-image quality slider | Global quality setting | ✅ Per-image with preview WINNER |
| WebP output | ✅ Yes | ❌ No |
| HEIC support | ✅ Yes | ❌ No |
| Extra image tools | ✅ 25 additional tools WINNER | Compression only |
| Cost | ✅ Free, no limits | ✅ Free (with batch limits) |
When to Use TinyPNG Now
- You need to compress more than 20 images at once
- You need WebP output or HEIC input for iPhone photos
- You want to download all compressed images in a single ZIP file
- Your images are private or sensitive and should not be uploaded to a server
- You need tools beyond compression: resizing, background removal, upscaling, face blur, etc.
- You want the highest compression ratios (up to 95% vs Optimizilla's 30-80%)
When to Use Optimizilla
- You are compressing a small batch of JPG or PNG files (under 20 images)
- You want to fine-tune the quality of each individual image with a visual slider and before/after preview before committing to a download
- Simplicity is the priority and you only need a single-purpose compressor
Frequently Asked Questions
Is Optimizilla free?
Yes, Optimizilla is free with no account required. However, it limits batches to 20 images, supports only JPG and PNG, and requires downloading each image individually. TinyPNG Now is also free, with no batch limit and a one-click ZIP download for all images.
Does Optimizilla support WebP?
No. Optimizilla supports only JPG and PNG for both input and output. TinyPNG Now supports WebP, HEIC, AVIF, GIF, BMP, TIFF, ICO, and more in addition to JPG and PNG.
Can I compress HEIC files from my iPhone with Optimizilla?
No. Optimizilla does not support HEIC files. You would need to convert them to JPG first. TinyPNG Now accepts HEIC natively -- drop your iPhone photos directly and compress or convert without pre-processing.
Which compresses images to a smaller file size?
TinyPNG Now achieves higher compression ratios -- up to 95% on PNG and JPG -- compared to Optimizilla's typical 30-80%. Both produce visually similar results at the same quality setting, but TinyPNG Now's algorithm generally produces smaller output files.
Can I download all images at once from Optimizilla?
No. Optimizilla requires downloading each image individually. There is no batch ZIP download. TinyPNG Now provides a single "Download All as ZIP" button regardless of how many images you compressed.
Why does Optimizilla have a quality slider and TinyPNG Now does not?
Optimizilla's per-image quality slider with live preview is designed for users who want to inspect each image individually and decide the compression level before downloading. TinyPNG Now uses a global quality setting that applies to all images simultaneously -- faster for batch work but less granular. It is the one workflow area where Optimizilla offers more control.