Big Photo App for iPhone/iPad/iPod Touch



View Big Photo App for iPad/iPhone On iTunes AppStore

1. Photo Selection Scroller

In “Menu Mode” – i.e. when the menu bar is showing,  swipe up/down/left/right, Photo Selection Bar will pull down or fade out.

This Photo Selection Bar is a horizontal scroller to show your Camera Roll or any currently selected photo album. You swipe left or right to scroll through your Camera Roll or any photo album. Tap on any photo icon to select for viewing or editing.

2.Take picture with Big Photo

Tap on Camera Icon, Camera will open for you to take a shot.

3. View pictures of ANY sizes with unlimited zoom

Common touch gestures support on big pictures and large images:

  • Pinch in/out to zoom in and out.
  • Press and Hold on spot,  you will zoom right into the spot with full resolution and 100% zoom.
  • Double tap on the picture, you will zoom right into the spot with full resolution and 100% zoom, or the picture will zoom out to a complete view fit on the screen.
  • Pan left, right, up, down to shift the view port of the picture.

When you have pictures or images over 20 megapixels, most photo apps will work on the downsized versions of those assets. Big Photo will allow you to gradually examine those assets in its original resolutions, up to pixel level.

4. Crop with precision

Big Photo allows you to crop your big pictures in its original resolutions so your cropped pictures will keep much more pixels than you can get by cropping the downsized versions of the big pictures.

5. Accurate Scale – Enlarge or Shrink 

With Big Photo, you can enlarge or scale down your original or cropped pictures to any sizes you like to. The enlarged or downsized pictures will be saved to Camera Roll automatically.

6. Import from or Export to Documents folder

New=>Horizontal Photo Selection Scroller. Crop with locking custom aspect ratio assist. Optimized for with 4” retina display! Support big pictures and large images.

Big Photo allows you to view pictures of ANY sizes at full resolution with unlimited zoom in/out and highest quality. Precisely crop with exact coordinates and pixel sizes, with or without locking custom aspect ratio. Accurately enlarge (like digital zoom) or downsize pictures with exact pixel sizes with or without locking aspect ratio. Automatically save your cropped, enlarged or downsized pictures back to your Camera Roll.

Capable of big pictures and large images: iPhone 4S/iPad 2 – 74MP+ for unlimited detail zooming. 56MP+ for resize and crop – sum up the sizes of source and result images. For other devices, adjust the sizes accordingly.

Work as your device’s universal image tool: for images in your emails or other apps, “Open in…” Big Photo to get detailed zoom and edit. Support Import and Export image files through iTunes File Sharing.

Big Photo’s combination of features extends the capabilities of other great photo apps given its special algorithm to deal with big pictures or large images. It is also an essential tool for iPhone 4/4S/5 not only because of its wonderful zoom viewer, but also you can use crop and enlarge to achieve better results than you use iPhone camera’s real time digital zoom.

★★★★★ “I am thrilled to have this tool. Thank you to the developers of Big Photo.” – HallYoung@Art, USA

“An undiscovered gem of utility” –

★★★★★ “Great app that resizes photos to 200%+ their original size without ruining their quality. Resulting output is similar to that of resizing algorithms in Photoshop. I use this app daily and it always gives me what I want in a timely, stable manner. This app is truly a useful and prized tool in my arsenal of photo apps.” – M., U.S.A

★★★★★ “5 stars for ability to zoom in really close and crop a small portion of a photo in high quality and custom dimensions. The slow and clunky user interface has been fixed in the recent version. It is now a joy to use, and tremendously useful.” – Maria, Greece

★★★★★ “There are a number of creative apps that are really useful but lack decent resolution output. Big Photo does an excellent job or sampling up and making those other apps more creatively useful… For the iPhone camera output and other ordinary camera apps shooting at the standard 8 million pixels the software easily deals with scaling up with great results. A much needed tool for mobile art and photography. Highly recommend.” – Poetry, UK


In addition to access your Camera and existing Photo Library, Big Photo also provides document interaction support so you can launch Big Photo to handle pictures or images from within your other apps that support document interaction.

Better yet, for advanced users, you can transfer your pictures between your PC/Mac and Big Photo’s iTunes File Sharing folder. For instructions how to use iTunes File Sharing, see

Support file formats:png, jpg (jpeg), gif, tif (tiff), bmp, ico, cur, xbm.

(Keywords: full resolution, digital zoom, photo viewer, crop, resize, scale, very large photo, very big picture, very large image, huge image, huge picture, huge photo, iTunes File Sharing, photo import, photo export)

19 Responses to Big Photo App for iPhone/iPad/iPod Touch

  1. Antonio Leao says:

    Please tell me how to maintain the same DPI when I enlarge a photo!?!
    Normaly when I enlarge the photo, if the original DPI is 180 it came down to 72.
    But I want that it remains at 180 after enlarging! How to proceed????

    • zynsoft says:

      iOS/Mac OSX standard input/output DPI is 72 for best display. However, if your image source is not iOS devices or Mac, it is possible to have different DPI. We will investigate your problem to make sure DPI intact.

  2. lessing says:

    译 文
    Hello, thank you for developing this interesting software. Yesterday I find and buy the APP. The Zoom function is very useful to me.
    In view of some of my work needs, I hope you can add a function: After the picture enlarged, there is a button to lock screen, any other operations will not move the picture. Is that ok?
    Thank you very much!
    Looking forward to your reply!

    • zynsoft says:

      建议听上去很有意思,我们会考虑。另外,如果您的iphone/ipad 锁定了旋转,屏幕应该很稳定的。截屏到相机胶卷也可以啊。

      • Lessing says:

        你们是中国的团队吗?能否直接邮件交流啊 这个网站实在太慢。 我的意思是放大照片后,能一键锁定当前画面,其他操作都不能移动画面。 锁定旋转的话,屏幕还是能操作移动的。

      • zynsoft says:


  3. Lessing says:

    谢谢你们的关注。我再多问一下,请问你们会加入这个功能吗?如果加入的话,有时间表吗? 我想快点用到,呵呵:)谢谢!

  4. ChrisHarb says:

    I am writing to give feedback. I have found that when I crop a picture using BigPhoto, a thin white line appears along the bottom. This means I have to re-crop the image in another app to get a clean edge. I think BigPhoto is a wonderful app, which I use daily and have praised it in the App Store and will continue to do so.

    • zynsoft says:

      Thanks for feedback. We will fix this issue if we can verify.

      • ChrisHarb says:

        Hi there,

        I used BigPhoto on another image tonight, cropped it and there was no problem.

        Went back to last night’s image, the one where I spotted the white line, and cropped it. Again no problem.

        I believe now I must have made a mistake, or if there is a problem it is intermittent.

        I am sorry if I have wasted any of your time on a fool’s errand.

        I’ll do more testing before speaking out next time.

        Chris Harbinson


      • zynsoft says:

        Thanks for feedback.

      • ChrisHarb says:

        Hi, Last night I wrote you a virtual retraction of my feedback about cropping in BigPhoto. Tonight I again cropped a picture in BigPhoto and there it was again, an unmistakable thin line of white pixels along the bottom of the cropped version, from which I had removed some dead ground at the bottom. So this appears to be an intermittent fault. It may take a little looking, but I am now confident that you will find it. All the best Chris Harbinson

        Sent from my iPad


  5. Hi–

    How can I keep full EXIF info in the saved BigPhoto image file?

    I see there’s the option to save the ‘photo info’ to the pasteboard, yet I can’t see (within the app itself) how to paste it somewhere to *keep* it.

    fri, 11/4/2016

    • zynsoft says:

      The EXIF info you see on the pop up is extracted from the image. So it is saved in the image already. Using “Copy to Pasteboard” simply allows you to analyze these information somewhere else. This is useful for some images of some people. E.g. some images may be from Internet downloads, for curiosity, email to your desktop to find out time, place and device etc

  6. Hey–thanks for that! My mistake–I was working on several versions of a photo and must’ve selected one w/o EXIF that I’d derived from a PNG, accidentally.

    Now here’s a worthy question for an app developer, though: what are the chances of you adding a feature (or preference) to save as the highest quality JPG? (I ask since you’re one of the few–if not only–super size image apps, and retaining fidelity is a must for me.)

    As it is now, that 4.2 meg jpg is getting cut down to 1.9 megs with a noticeable increase in blur and an apparently pretty big sub-sampling matrix size on the part of BigPhoto. (Beyond blurriness, there’s a marked increase in block-y artifacting.)

    I’d settle for PNG export, too. 😉


  7. Or .TIFs, if we’re talking EXIF.

    • zynsoft says:

      In Big Photo app Settings menu, there is a “Save Alpha” switch. If you turn it on, all operations (except Crop-Preset) will save the result as PNG if needed, meaning if the original image has alpha channel or some transparency. For crop, if you still include alpha, the custom mode will keep it.

  8. Thanks for your time and help–wow.

    I’ll be using BigP a lot more now…plus singing its praises to all who’ll listen. (And your quick, helpful support here will be remembered!)


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