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If Luminar feels slow or runs out of space on a Chromebook, first confirm which Luminar app you use. Skylum lists Luminar Mobile for ChromeOS, while Luminar Neo’s desktop requirements cover Windows and macOS—not ChromeOS. For Chromebook slowdowns, start with Google’s general memory checks; for Luminar Mobile sync problems, check Luminar Space. Neo catalog cleanup instructions apply only to the desktop app.
Identify the Luminar app and the problem
Skylum lists Luminar Mobile for Android and ChromeOS. Luminar Neo’s desktop requirements list Windows and macOS. Those requirements are not a ChromeOS specification, so do not apply Neo’s desktop storage or hardware guidance to Luminar Mobile.
Before troubleshooting, note your Chromebook model, ChromeOS version, Luminar app version, and available device storage. Identify the symptom: slow editing, app crashes, browser tabs reloading, delayed synchronization, or trouble importing or exporting. Skylum’s published information does not establish compatibility for every Chromebook model.
Try ChromeOS memory troubleshooting for general slowdowns
Slow tabs, reloads, or a device that becomes unresponsive can point to Chromebook memory pressure. Google’s recommendations are general ChromeOS troubleshooting steps, not Luminar-specific fixes.
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#1 Best Overall
- 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.
- Close unused tabs and apps. If tabs keep reloading, Google says the Chromebook may be low on memory.
- Restart the Chromebook. Reopen Luminar and check whether the symptom persists.
- Close unused apps or windows. Press Shift+Esc to open Task Manager, then close items you do not need.
- Review extensions. Turn off extensions you do not need. If the problem began after installing an app or extension, Google suggests uninstalling the recent addition.
- Run Diagnostics. Use the Chromebook Diagnostics app to investigate memory issues.
Test after each change so you can tell whether it helped. These steps cannot establish or fix a Luminar Mobile bug; if the same app-specific fault continues, contact Skylum Support with the symptom and your app and ChromeOS versions.
Check Luminar Mobile synchronization separately from local storage
Skylum documents cross-device synchronization for Luminar Mobile through Luminar Space. In Luminar Mobile settings, make sure synchronization is enabled, then check the cloud indicator for sync status. Luminar Space settings also let you control cellular data use. These controls can help explain incomplete sync or mobile-data use, but Skylum’s documentation does not say that synchronization frees space on the Chromebook or specify how much cloud storage is included.
Rank #2
- 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.
Use Neo catalog cleanup only on a supported desktop
This section is for Luminar Neo on Windows or macOS, not Luminar Mobile on a Chromebook. Skylum says catalog storage can grow as edit history accumulates; its documentation identifies Cache Documents on Windows and History on macOS as common locations.
If you are certain you are using Neo desktop, have exported work you want to keep, and no longer need the retained edit history, Skylum’s manual cleanup procedure is to quit Neo, open the catalog folder, and clear the contents of the relevant history or cache subfolder. Do not delete the Resources folder: Skylum says it contains essential AI masking files. If you are unsure which catalog folder or subfolder applies, do not remove files; consult Skylum’s support documentation.
Rank #3
- 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.
Back up Neo edits and original photos independently
For Neo desktop, a catalog backup preserves editing data, but Skylum says it does not include the original photo files. Keep the originals backed up separately. To move a Neo catalog to another computer, Skylum’s method is to copy the entire catalog folder and original files, preserve their folder structure, and open the .luminarneo file on the new device. This transfer method works only between computers running the same operating system—Windows to Windows or Mac to Mac—not from a desktop catalog to ChromeOS.
Choose export settings for the file you need
Luminar Neo’s export options let you select a format and adjust quality and dimensions. Skylum says JPEG quality and compression affect file size, while TIFF files are much larger and suited to archival-quality output. The documentation gives no standard output sizes, so select dimensions and quality for the destination rather than relying on a predicted file size.
Quick Recap
Best Value
- 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
- 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
What to do if the problem continues
- Confirm the app is listed as available for your Chromebook and ChromeOS version; the available documentation does not verify compatibility for every model.
- For general slowdowns, use Google’s Chromebook memory troubleshooting steps above.
- For a Luminar Mobile sync delay, check synchronization status in Luminar Space and review cellular-data settings.
- For a repeatable app crash or other app-specific fault, contact Skylum Support with the exact steps that trigger it and your app and ChromeOS versions.
- Do not apply Neo desktop catalog cleanup instructions to Luminar Mobile or assume its files can be moved to external storage; Skylum’s cited documentation does not establish that workflow.
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