Upload one image
Open the tool and choose a JPG, PNG or WebP file up to 10 MB that you have permission to edit.
IMAGE CLARITY WITH LEM GEN
Sharpen Image Online — Free & Unlimited
Sharpen an image online with 2× AI upscaling. Compare the result with your original and check the details that matter.
One image per task2× each dimensionReview credits before use
Understand the result
What does it mean to sharpen an image?
Sharpening makes transitions around edges appear more distinct. Traditional adjustments often increase local contrast, while AI upscaling estimates detail as it enlarges the image. Lem Gen's tool uses the latter approach: it requests twice the width and height, without a separate strength slider. Estimated details may differ from the original, especially when the source is very blurry.
Check more than sharpness
- 1. Look for halos or rough edges at normal viewing size.
- 2. Compare faces, product details and text with the original.
- 3. Check the final pixel dimensions for your intended use.
How to sharpen an image
Review before submitting
Sign in and check the 2× enlargement, size limit, visibility and your account’s credit cost.
Compare and download
Inspect edges, faces, lettering and textures against the source image, then download the result if it meets your needs.
Choose the right approach
| Goal | Approach | Trade-off |
|---|---|---|
| Larger image with clearer-looking detail | Try 2× AI upscaling | Fine detail may be estimated or changed |
| Small edge adjustment at the same size | Use an editor with a sharpening control | Strong settings can create halos |
| Read important blurred text | Return to the source or rescan | An AI reconstruction may be incorrect |
Photos
Review faces, hair and textures after enlargement.
Product images
Check that labels and product details remain accurate.
Design and print
Start with the best source and inspect the output at its intended size.
Frequently asked questions
How can I sharpen an image online?
Open the tool and upload a supported image. Lem Gen requests 2× AI upscaling, which can change how fine details appear; review your result against the original before using it.
Does this tool have a sharpening strength slider?
No. The current tool requests a fixed 2× upscale and does not expose separate sharpening, denoising or color controls.
Can it fix a severely blurry photo?
Results vary. AI can estimate plausible detail, but it cannot guarantee recovery of information that was never captured. Severe motion blur or an out-of-focus face may remain inaccurate.
Can it make text readable?
Small or blurred lettering may change or be invented. Do not rely on the result to verify labels, documents or other important text; compare with the original.
Which files and dimensions are supported?
Upload one JPG, PNG or WebP image up to 10 MB. At 2×, the requested result must have a longest side of no more than 3,840 pixels and an area of no more than 3,840 × 2,160 pixels.
How much does it cost?
The standard cost is 100 credits per image, including smaller images. Eligible plans may receive a discount; sign in to see your account’s cost before submitting.
Do I need an account and are images private?
Sign-in is required to create a task. Free-account generations are public; eligible paid users can choose private visibility. Review the visibility setting before submitting.
Can I use this for product photos or print?
You can try images you have permission to edit. For product photos, check labels and colors; for print, review the final dimensions and appearance at the intended size.