For quick conversion, you can use XnShell (Windows only): it adds a few neat Shell Extension (right-click file menu) options.

JPGs > 2 MiB can be made ≤ 2 MiB by saving them at a lower quality. Some image editing software, such as Irfanview, have a 'set file size' functionality. Setting it at 2048 KiB (= 2 MiB) should work.

PNGs > 2 MiB can usually be made ≤ 2 MiB by saving them to JPG. Quality = 95 usually works.

Imgur GIFV videos also have a GIF version in a similar URL pattern. E.g., https://i.imgur.com/example.gifv → https://i.imgur.com/example.gif

GIFs > 2 MiB are a bit trickier to edit. Using a GIF optimizer such as this one, it may be possible to lessen its filesize to ≤ 2 MiB by doing one or more of the following: resizing it to have lower resolution (SE only shows 650px max width on embedded images), cutting its frames in half by removing every 2nd frame then slowing it down to 50% to get back to previous speed, color reduction + dither to reduce colors to 128, and lossy GIF compression (may lower quality significantly, depending on image and compression level).

Another alternative is to archive the post using services such as: Internet Archive Wayback Machine and archive.today, so that the images in it can be edited back later. Note that this will only archive the image if it is embedded into the post.

For quick conversion, you can use XnShell (Windows only): it adds a few neat Shell Extension (right-click file menu) options.

JPGs > 2 MiB can be made ≤ 2 MiB by saving them at a lower quality. Some image editing software, such as Irfanview, have a 'set file size' functionality. Setting it at 2048 KiB (= 2 MiB) should work.

PNGs > 2 MiB can usually be made ≤ 2 MiB by saving them to JPG. Quality = 95 usually works.

Imgur GIFV videos also have a GIF version in a similar URL pattern. E.g., https://i.imgur.com/example.gifv → https://i.imgur.com/example.gif

GIFs > 2 MiB are a bit trickier to edit. Using a GIF optimizer such as this one, it may be possible to lessen its filesize to ≤ 2 MiB by doing one or more of the following: resizing it to have lower resolution (SE only shows 650px max width on embedded images), cutting its frames in half by removing every 2nd frame then slowing it down to 50% to get back to previous speed, color reduction + dither to reduce colors to 128, and lossy GIF compression (may lower quality significantly, depending on image and compression level).

Another alternative is to archive the post using services such as: Internet Archive Wayback Machine and archive.today, so that the images in it can be edited back later. Note that this will only archive the image if it is embedded into the post. If it is linked but not embedded into the post you will need to archive the original Imgur URL, e.g., https://i.imgur.com/example.gif.

For quick conversion, you can use XnShell (Windows only): it adds a few neat Shell Extension (right-click file menu) options.

JPGs > 2 MiB can be made ≤ 2 MiB by saving them at a lower quality. Some image editing software, such as Irfanview, have a 'set file size' functionality. Setting it at 2048 KiB (= 2 MiB) should work.

PNGs > 2 MiB can usually be made ≤ 2 MiB by saving them to JPG. Quality = 95 usually works.

Imgur GIFV videos also have a GIF version in a similar URL pattern. E.g., https://i.imgur.com/example.gifv → https://i.imgur.com/example.gif

GIFs > 2 MiB are a bit trickier to edit. Using a GIF optimizer such as this one, it may be possible to lessen its filesize to ≤ 2 MiB by doing one or more of the following: resizing it to have lower resolution (SE only shows 650px max width on embedded images), cutting its frames in half by removing every 2nd frame then slowing it down to 50% to get back to previous speed, color reduction + dither to reduce colors to 128, and lossy GIF compression (may lower quality significantly, depending on image and compression level).

Another alternative is to archive the post using services such as: Internet Archive Wayback Machine and archive.today, so that the images in it can be edited back later. Note that this will only archive the image if it is embedded into the post.