Magnifying glassdrawing

This online tool lets you change the JPG quality. It has only one option that sets the new quality parameter. It can range from 0% to 200%, where 100% is the current JPG quality, 0% to 99% is a lower quality JPG, and 101% to 200% is a higher quality JPG. When you create a low-quality JPG, the number of colors in the photo is reduced and rough pixels appear. The closer the value approaches 0%, the more JPG artifacts appear and the quality becomes worse and worse as the compression of the file increases. When creating a high-quality JPG, the contrast and saturation of colors increases and the details in the JPG are sharpened. The closer the value approaches 200%, the more JPG approaches a HD-quality photo. As the quality increases, the file size also increases. Jpg-abulous!

In this example, we enhance the quality of a cake JPG by 50%. Even though the visual difference in the contrast and colors of the enhanced JPG is stunning, this operation increases the file size just slightly from 110KB to 116KB. (Source: Pexels.)

Bestlens in a magnifying glass

This simple browser-based utility enhances or reduces JPEG picture quality. Just paste your JPEG photo in the input area and the utility will automatically change its quality. It's fast, free, and without intrusive ads. Import a JPEG – get a higher or lower quality JPEG in the output. Created by mad scientists from team Browserling.

Magnifying glass lensonly

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Above the UV when lenses can't be used focussing mirrors can be used e.g. at Synchrotrons. Mirrors can also be used in the IR range - a problem with lenses is that chromatic aberration is caused by different wavelengths having slightly different refractive indicies and this leads to a lens having different focal lengths for different wavelengths (or colours) of light - An advantage with mirrors is that focal lengths are wavelength independent - Mirrors have focal lengths that only depend on geometry. Hope this is helpful

Magnifying glassdiagram

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Lens in a magnifying glassfor reading

The free plan lets you use JPG tools for personal use only. Upgrade to the premium plan to use JPG tools for commercial purposes. Additionally, these features will be unlocked when you upgrade:

This simple browser-based utility enhances or reduces JPEG picture quality. Just paste your JPEG photo in the input area and the utility will automatically change its quality. It's fast, free, and without intrusive ads. Import a JPEG – get a higher or lower quality JPEG in the output. Created by mad scientists from team Browserling.

10 uses ofmagnifying glass

In this example, we decrease the quality of the input JPEG photo of a mouse from 100% (149KB) to 80% (58KB). When the compression is in the range of 70% to 100%, then the quality of the output JPEG is almost the same as the input JPEG (but the size is much smaller). (Source: Pexels.)

Magnifying glassuses

In the IR (infra red) I think ZnS is a material of choice for lenses and windows - but I know KBr can be used - Potassium Bromide - you have to be careful with KBr as it dissolves in water.... Above the UV it becomes difficult to use windows as all materials are damaged by light above about 10 eV per photon, which is the same as abou 120 nm (very roughly). The window material that goes highest in energy is LiF - Lithium Fluoride.

In this example, we create the highest quality JPG image of an orange flower. We set the quality percentage to 200%, which gives it the maximum improvement in color richness, details around the edges, and more defined shadows. (Source: Pexels.)

This online tool lets you change the JPG quality. It has only one option that sets the new quality parameter. It can range from 0% to 200%, where 100% is the current JPG quality, 0% to 99% is a lower quality JPG, and 101% to 200% is a higher quality JPG. When you create a low-quality JPG, the number of colors in the photo is reduced and rough pixels appear. The closer the value approaches 0%, the more JPG artifacts appear and the quality becomes worse and worse as the compression of the file increases. When creating a high-quality JPG, the contrast and saturation of colors increases and the details in the JPG are sharpened. The closer the value approaches 200%, the more JPG approaches a HD-quality photo. As the quality increases, the file size also increases. Jpg-abulous!

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This example increases the resolution of a JPEG from a low-resolution photo to a high-resolution photo. It sets the quality parameter to 175%, which increases the contrast, sharpness, and detail of the mountain edges and the river reflections by 75%. The new JPEG is almost HD-quality. (Source: Pexels.)

Magnifying lensconcave or convex

In this example, we load a JPG picture of a sunflower and set the compression quality to 0. This way, the output JPG is almost unrecognizable and is pretty much made only out of compression artifacts. (Source: Pexels.)

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