@cvp you are correct. My pb was pbly sthg else.

@cvp just to let you know here is my code.
It wont run because the rest of the code is missing, but it gives you the idea

def save(self):
    # make a hi resolution copy of back & images, then save it in camera roll
    xo, yo, w, h = self.page.back.frame
    c = self.page.back.background_color
    targetWidth = 4*1024
    s = targetWidth / w
    w, h = w*s, h*s
    page = ui.View( frame=(0,0,w,h), background_color=c)
    views = []
    for thumb in self.thumbs:
      x,y,w,h = thumb.frame
      x,y,w,h = (x-xo)*s, (y-yo)*s, w*s, h*s
      v = ui.View( frame=(x,y,w,h) )
      x,y,w,h = thumb.iv.frame
      x,y,w,h = x*s, y*s, w*s, h*s
      img = thumb.getImage(thumb.asset)
      iv = ui.ImageView(frame=(x,y,w,h), image=img)
      v.add_subview(iv)
      page.add_subview(v)
      views.append(v)
    # save page image in pythonista
    getTopView().add_subview(page)
    #page.bring_to_front()
    #if True: return
    path = 'temp.jpg'
    with ui.ImageContext(page.width, page.height) as ctx:
      page.draw_snapshot()                            
      ui_image = ctx.get_image()
    pil = Image.open(io.BytesIO(ui_image.to_png()))
    pil.save(path , quality=99)
    # save page image in albums
    asset = photos.create_image_asset(path)
    os.remove(path)
    getTopView().remove_subview(page)
    views = False
    console.hud_alert('saved')

looks like i must add the view to the screen to get the draw snapshot to work.

@cvp i do have 2 pixels per point (ipad air)
i dont crash, it is just that the image saved is black
i checked that 4x1024 is ok and 4x1025 fails
i remember this ios limit 4096 from somwhere.

@cvp 5000 doesnt work for me and 5000<7000

@cvp i had forgotten that 4000 is really 8000 because x2
i think 8000 should be enough for prints 60 cm wide => thanks. you saved my last week of coding!

However it is strange that 15000 is ok bu not 9000...?

Concerning the use of the project without any album, i could modify this for you if you are really interested in using this code. Are you?

thanks.

@cvp thank for the info
i check again

@cvp hello again!

I am trying to make a high definition image with draw_snapshot()
I works fine until the context width is 4000, but i get a black image when the context width is 5000 or more. I need 9000....
Any suggestion?
Thanks.

@cvp actually it does work on the regular version.
Not sure why i didnt see that before.
Thanks.

@cvp thank you!
when you say:

Altough last version of Pythonista offers an easy way to add an home screen shortcut for an edited script

do you mean the first link above?

@shinyformica hello!
how do you make a homescreen shortcut to a pythonista script?
thanks!