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To reduce an image’s file size, keep an untouched original, resize it to the pixel dimensions it actually needs, then export it in a suitable format and compare the result at its intended viewing size. Use lossy compression for many photographs when a small visual change is acceptable; use lossless compression when preserving exact pixel data matters. There is no single quality setting that works for every image.
Choose the right kind of compression
Compression reduces the amount of data needed to store an image. The two main approaches make different trade-offs:
- Lossy compression makes a file smaller by discarding some image information. Lower quality settings usually reduce the file size further but can make artifacts more visible. It often suits detailed photographs, while text, line art, and flat graphics can show damage around sharp edges.
- Lossless compression reduces file size without losing image data. It is useful when exact pixels matter, though it may not shrink a photograph as much as a lossy format.
Lossy encoding can reduce accuracy through quantization and may also discard color information through chroma subsampling. The result depends on the image and encoder; a format change does not guarantee a smaller file.
Prepare the image before exporting
- Keep a copy of the original. Export a compressed version rather than overwriting the only copy. This lets you change formats or settings later.
- Resize oversized images. If the image contains more pixels than the destination will display, reduce its width and height while keeping its aspect ratio. This can lower file size before compression. Choose dimensions for the actual display or upload requirement rather than shrinking blindly.
- Check what the destination requires. Confirm whether it accepts your chosen format and whether the image needs transparency, animation, metadata, or particular color information. A smaller file is not useful if an important feature disappears or the receiving app cannot open it.
Pick a format that fits the image
| Format | Often useful for | Trade-offs to check |
|---|---|---|
| JPEG | Photographs where lossy compression is acceptable. | Adjust quality and inspect the result for visible artifacts; repeated lossy exports can further change the image. |
| PNG | Images needing lossless output, precise pixels, or transparency. | For photographs, it may not shrink the file as much as a lossy option. |
| WebP | Photographs or graphics when lossy or lossless compression is suitable; it also supports transparency and animation. | Confirm the destination supports WebP and that the selected mode preserves required features. Google reports lossy WebP images as 25–34% smaller than comparable JPEG images at equivalent SSIM quality index, and lossless WebP images as 26% smaller than PNG. These are Google’s comparisons, not a promise for an individual image. |
| AVIF | Images where a modern format is supported and its compression and feature options suit the content. | Check compatibility and required features in the actual destination; results vary by image and encoder. |
| SVG | Graphics that can be represented as drawing commands, such as some logos and diagrams. | It is not a general replacement for compressing photographs. |
For web use, web.dev’s image-format guidance recommends weighing image content and requirements rather than assuming one format is always best. Google’s WebP comparison provides the conditions behind its reported savings.
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#1 Best Overall
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Elebase USB to USB C Adapter for iPhone 18 Pro Max,USBC Car Charger Adapter
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Export, inspect, and adjust
- Export a version in the chosen format. For a lossy format, start with a quality setting that seems reasonable rather than aiming for the smallest possible file.
- Compare it with the original at the intended display size. Inspect fine edges, text, gradients, and transparent boundaries. Zooming in can reveal artifacts, but judge whether they matter at the size people will actually see.
- Adjust and export again if needed. If artifacts are distracting, raise the quality or try a different format. If the image still looks clear and the file is too large, try a lower quality setting or smaller pixel dimensions.
- Check the saved file. Verify its actual size, open it in the intended app, and confirm transparency, animation, or other required properties survived.
For web images, web.dev’s compression guidance names Squoosh, ImageOptim, and image optimization services as options. The appropriate choice depends on your workflow and destination; check the output and any relevant tool terms yourself.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Compress an image in Photoshop
Adobe’s Photoshop desktop instructions, last updated October 4, 2026, document this WebP workflow. Native WebP support is available in Photoshop 23.2 and later for 8-bit RGB documents.
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Anker USB-C Hub, 5-in-1 USB Hub for Laptops, 4K HDMI Multiport Adapter
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
- Open the image and choose File > Save a Copy.
- Select WebP as the format and save the copy.
- In WebP Options, choose Lossless for perfect fidelity or Lossy and adjust the Quality slider to balance file size and detail. Adobe notes that higher quality values create larger files while preserving more detail.
- Choose whether to include XMP, EXIF, or Photoshop Extras, then confirm the saved file opens correctly and retains the features you need.
Adobe documents these controls in its Photoshop guide to saving files in graphics formats.
Quick Recap
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Anker USB C Hub, 5-in-1 USBC to HDMI Splitter with 4K Display
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Rank #4
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UGREEN USB to USB C Adapter Combo 4-Pack, 10Gbps USB C Converter Space Gray
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Rank #3
Sale
Anker USB C Hub, 7in1 Multi-Port USB Adapter, 4K@60Hz USBC to HDMI Splitter
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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