JPEG is a lossy-compression method for a digital image. The images can end up in many JPEG image containers (JPEG, JPG, JIF, JPE, JFI, JFIF) depending on the parameters surrounding the compression of the image data. JPEG is actually an acronym for Joint Photographic Experts Group, the group that ...

learn more… | top users | synonyms (1)

7
votes
3answers
10k views

How can I make Windows Paint save by default as JPEG format?

Every time I want to save an image I've pasted into the Paint application, it chooses a BMP/DIB format (which is the worst for saving things from the clipboard). How can I hack Paint into defaulting ...
0
votes
0answers
15 views

How to upload a JPG to facebook with the caption pre-embedded?

What field do I have to put my caption into to have it show up on Facebook pre-captioned? I've been living on generating FBCMD scripts for years, but the developer has retired the project as of the ...
2
votes
1answer
229 views

Duplicate Images / Tags - sorting and removing

I have folders full of camera images that I have copied and backed up between my laptop, computer and external hard drive(s). I want to organise and sort them, and remove duplicates, so I have used a ...
0
votes
1answer
34 views

How to batch convert JPEG images with jpegtran on Windows

Is it possible to batch convert a folder of JPEG images using jpegtran on Windows? I normally use the following command for one file, but I'm not sure how to apply it to an entire directory of JPEG ...
2
votes
2answers
7k views

How to convert JPEG JFIF files to JPEG Exif format?

I recently put the SD card of my camera in a Windows 7 PC and start browsing pictures on it. I noticed some were not aligned correctly and use rotate feature included in Windows Photo Viewer in order ...
9
votes
5answers
12k views

How do I batch convert thousands of NEFs to JPEGs?

I accidentally set my camera (a Nikon D70) to shoot in NEF only and not NEF+JPEG. Obviously, this will be a major pain when I want to go through them all. I don't envy having to wait for seconds at a ...
33
votes
4answers
17k views

Meaningful thumbnails for a Video using FFmpeg

FFmpeg can capture images from videos that can be used as thumbnails to represent the video. Most common ways of doing that are captured in the FFmpeg Wiki. But, I don't want to pick random frames at ...
16
votes
7answers
28k views

Stop Windows 8 from converting wallpapers to low quality JPGs

Hello, visitor from the future! If you landed here because you're as annoyed as I am, consider voting for this thingy on Microsoft's Uservoice page for Windows 10. This has been bugging me on ...
7
votes
6answers
295k views

how to change the dpi of an image

I have an jpeg file of 300 dpi. I need to reduce it to 200dpi. How can I do that? Do I need any specific application or it can be done using Picasa/paint/MS picture manager, if yes how? Thanks
2
votes
3answers
128 views

Removing Background color in Paint.net

I have a .jpg image of a text logo, it looks similar to the example image here: I am using paint.net. Now, I would like to change the image to .png, then I would like to remove all the white ...
1
vote
1answer
4k views

7-Zip: Unsupported Compression Method while trying to extract a zipx file that consists of JPEGs

A zipx file I received consists of .csv files and .jpeg files. I used 7-zip to extract them. While the .csv files were sucessfully extracted, the JPEG files didn't. The error was something like this ...
0
votes
1answer
71 views

Convert jpeg quality to 80% using automator

I want to make a automator script that goes trough a folder with subfolders and convert all .JPEG (or .JPG) to the same JPEG, but with a quality of 80%. There is no option in Automator it self like ...
13
votes
4answers
18k views

How to batch combine JPEG's from folders into PDF's

I have a about 500 folders with images inside. Is there a way I could batch convert this so that I get .pdf files that contain all images inside as pages? EDIT: There should be 500 PDF's created, ...
0
votes
1answer
9k views

How to convert MS Word 2007 file into JPG file?

How do I convert an MS Word 2007 file into a JPG file? I need a method that will work off-line for Windows XP, preferably that does not require installing software.
0
votes
1answer
433 views

Use ffmpeg for JPEG to TIFF conversion

I would like to use Tesseract OCR with a video. With ffmpeg I can export some (.jpeg) images from a video. Can I convert a .jpeg into a valid .tiff or export directly .tiff images from the video with ...
2
votes
1answer
61 views

PNG or JPEG for an X-Ray without visible artifacts

A past paper question from a Multimedia Systems exam: If you had an X-Ray photograph of a leg which might be broken, which would give better compression before artifacts were visible, and which ...
5
votes
4answers
3k views

Is there a way to find only progressive jpegs on Mac using Adobe CS or other apps?

To put my work up on my website, I initially collected some images and converted them to progressive jpegs. But later I went in and added more. I now can't tell simply by file size which ones are ...
-1
votes
2answers
65 views

What kind of image compression causes this color banding? [closed]

I have two images. The first is before undergoing lossy compression: Picture #1: The second is after undergoing lossy compression: Can anyone explain to me what is going on here? How does this ...
0
votes
1answer
42 views

Can't View Thumbnails when trying to open JPEG files

In Photoshop, I put in a CD with my images, when I try to select a file, I can't view the thumbnails. Only the Photoshop icon! It showed the actual picture before, and all of a sudden it stopped! ...
1
vote
2answers
42k views

How to convert a 24 bit JPEG image into 8 bit image?

I have a 24-bit image. I need to convert it into an 8 bit JPEG image. Can it be done by MS Paint or MS picture manager or I need to download any tool. I tried some tool but that did not work. Will ...
3
votes
1answer
13k views

How to fix damaged jpeg file on Windows?

Recently I stupidly deleted some photos I shouldn't have. I used a program to recover the photos, some of them came back in a corrupted condition like below with grey areas. Any idea on how to fix ...
0
votes
1answer
52 views

JPGs seem corrupted on Arch but are good on Fedora and Windows7

I re-installed Arch on my computer (clean install). Since then when copying images (JPG) and movies (mov) from SD card they seem to be corrupted. When rsync-ing to the computer some of the files ...
1
vote
5answers
7k views

Saved Visio drawing (VSD) as JPG, how to covert it back to a Visio file?

I have made a class diagram and i have saved it as a JPG from Microsoft Visio. How do I convert the JPG to a VSD file so that I can make changes to it?
4
votes
3answers
557 views

Does the JPEG file format support RGB data?

I am doing some programming that involves encoding image data using WIC. I used RGB data but WIC always treats it as BGR. I have a related question on Stack Overflow dealing with the programming ...
0
votes
2answers
182 views

Can TIFF images store embedded thumbnails in them like JPEG (JPG) files can?

Can TIFF images store embedded thumbnails in them like JPEG (JPG) files can? I noticed that in XNview, when you save a TIFF image there is an option to set the JPEG quality (of the TIFF image). ...
1
vote
0answers
115 views

Unable to open invalid jpg file

A few days ago I took pictures from my camera and uploaded them to my computer. Now the photos that I took few days ago was appear to be corrupted or invalid format. I have tried use third party ...
1
vote
0answers
84 views

fix a corrupted JPEG file? [closed]

The most frustrating thing happened, I was rotating an image on my phone from an SD card and the SD card was "suddenly removed" or knocked out of place in my phone and the image was deleted. It wasn't ...
1
vote
1answer
98 views

Maximum Number of images

How many images can be produced by all permutations of 24-bit 640x480 JPEG? Is this is the maximum number of images on 24 bit 640x480 frame and we can not have more images?
0
votes
0answers
172 views

Corrupt CR2\JPEG file - correct size but all zeros in Hex editor

I have an SD card with some RAW images (.CR2) and JPEG's that show the correct size but won't open (invalid image). Hex editor shows all zeros in these files. Before you answer the obvious "All zeros ...
0
votes
0answers
62 views

.png images load great - .jpg images are blurry on website

I've searched around and found lots of information about blurry images and I've implemented some of the fixes I found and it worked on about 50% of them. I'm posting Android apps and iOS apps - all ...
0
votes
3answers
10k views

Automatically set default Save As… image file type to JPEG in Photoshop on Mac OS X

In Photoshop, on Mac OS X, is there a way to have the file type in the Save dialog automatically set to JPG? If not, is there an easy way to trigger an AppleScript program to set it that way? Seems ...
0
votes
2answers
49 views

JPGs created with Imagemagick won't display on TV

I am trying to convert a free ebook from PNG to JPG, so I can read it on my Sony Bravia KDL-40R470. This is how I converted the PNG file: convert -density 117 -quality 80 progit.pdf progit.jpg ...
0
votes
0answers
39 views

Saving Images as Filenames in Excel

I have a product information sheet from a supplier that needs to get uploaded into an ecommerce platform. However, the spreadsheet contains actual images in the image column instead of filenames. I ...
0
votes
0answers
34 views

How to display a fragment of an image file using Scalpel

I am working on a demonstration using Scalpel and its abilities to carve out image files. I took a small thumb drive and filled it with many small sized files until it was full. I then went and ...
-1
votes
5answers
4k views

JPGs become zero-byte images

I had a few files in my computer that became zero bytes files automatically. When I try to open the files, it says invalid pics. How can I retrieve these images?
1
vote
2answers
12k views

What is the difference between progressive and optimized JPEGs in Photostop?

When saving a image for web and devices as JPEG, I can either choose “progressive” or “optimized” or “none.” What is the difference between both and what should I use? In my case, the image is the ...
0
votes
0answers
40 views

Windows: how to enable tags on old image files?

I have a lot of old photos which I want to tag. For cross-platform compatibility, I want to use IPTC Keywords for tagging. As far as I read, the native Windows photo tagging capabilities use IPTC ...
2
votes
3answers
5k views

Convert word to “JPEG-like” pdf file

I've got a word document I'm trying to save to an uneditable, unselectable PDF file. Essentially, I'd like it to look like a JPEG, but in PDF format. I'm trying to avoid "printing to tiff, THEN ...
1
vote
2answers
5k views

How to convert a photo to a black and white image by ImageMagick?

How can I convert a JPEG photo to black and white (not grayscale) image like output of a FAX scanner, by ImageMagick?
0
votes
2answers
12k views

How to recover pixelated text from JPEG image with Photoshop?

I've got a JPEG image with text on it (badly scanned document), which is hardly readable. I have already played around with the sharpen filters, contrast, levels and the color replacement tool, with ...
0
votes
1answer
2k views

The JPG file on my Open Office document is blurry when exported to PDF

I have tried both Open Office and Word, and the issue is the same. All looks fine until the document is exported to PDF, then the JPG image on the document becomes blurry. I hope someone can help.
0
votes
0answers
39 views

Exporting image in a specific Meter:Pixel scale from AutoCAD

I have a .DWG model which I would like to export from AutoCAD as an image (preferably JPEG) with a specific scale of (lets say) 100 pixels per 1 meter (1:100) The overall size of the image should be ...
0
votes
1answer
253 views

create video from single jpg and no audio

For a time lapse video project I want to create a header (with some title text). The header is just one still image which I give as jpg. I have seen other answers that produce still image video from a ...
1
vote
3answers
1k views

How to make multiple copies of the same image, but with different filenames?

Shortly, I'll be required to rename 22,000 .jpg files from imagereference.jpg to itemcode.jpg. The rename itself isn't a problem, the issue lies with several thousand of the images are currently ...
0
votes
1answer
700 views

combining images into timelapse movie

I was going through the steps listed in: How can I combine 30,000 images into a timelapse movie? When I run the mencoder command, I get an error saying: [mf] search expr: *.jpg ============ ...
30
votes
8answers
52k views

JPEG vs PNG vs BMP vs GIF

I would like to know which one of these formats requires less memory for the same quality of the picture, and what are the main differences between these formats.
0
votes
0answers
46 views

Check corrupted pictures on Synology?

On my computer I use the jpeginfo command for checking if my pictures are corrupted or not. I am trying to use the same command on my Synology. I tried to manually install jpeginfo on my DS212 ...
0
votes
2answers
364 views

Free JPEG EXIF remover capable of woking directories recursively needed [closed]

Do you know one? Ideally it should just get a directory name and run. So, EXIF editor with per file approach is not what I am looking for.
0
votes
0answers
53 views

jpegtran says “Unsupported marker type” when trying to open a file. How to remove unsupported markers from it?

I have a photo, it opens fine in image viewing software (such as Preview.app), but jpegtran (MozJPEG 3.0, not specific to this version) refuses to work with it, saying "Unsupported marker type 0xfa". ...
39
votes
1answer
2k views

Search for a JPG on my computer by using a smaller JPG?

I have a low resolution image that I know I have the full resolution image stored somewhere on my computer. Is there anyway to search for a JPG on my computer by using a small resolution of an image ...