Optimize an online file — resmush

Optimize and download an online image using the reSmush.it API.

Usage

resmush_url(
  url,
  outfile = file.path(tempdir(), basename(url)),
  overwrite = FALSE,
  progress = TRUE,
  report = TRUE,
  qlty = 92,
  exif_preserve = FALSE
)

Arguments

url

url or a vector of urls pointing to hosted image files. reSmush can optimize the following image files:

png
jpg/jpeg
gif
bmp
tiff

outfile

Path or paths where the optimized files would be store in your disk. By default, temporary files (see tempfile()) with the same basename() than the file provided in url would be created. It should be of the same length than url parameter.

overwrite

Logical. Should outfile be overwritten (if already exists)? If FALSE and outfile exists it would create a copy with a numerical suffix (i.e. <outfile>.png, <outfile>_01.png, etc.).

progress

Logical. Display a progress bar when needed.

report

Logical. Display a summary report of the process in the console. See also Value.

qlty

Only affects jpg files. Integer between 0 and 100 indicating the optimization level. For optimal results use vales above 90.

exif_preserve

Logical. Should the Exif information (if any) deleted? Default is to remove it (i.e. exif_preserve = FALSE).

Value

Writes on disk the optimized file if the API call is successful. In all cases, a (invisible) data frame with a summary of the process is returned as well.

If any value of the vector outfile is duplicated, resmush_url() would rename the output with a suffix _01. _02, etc.

Examples


# \donttest{

# Base url
base_url <- "https://raw.githubusercontent.com/dieghernan/resmush/main/inst/"

png_url <- paste0(base_url, "/extimg/example.png")
resmush_url(png_url)
#> ══ resmush summary ═════════════════════════════════════════════════════════════
#> ℹ Input: 1 url with size 239.9 Kb
#> ✔ Success for 1 url: Size now is 70.7 Kb (was 239.9 Kb). Saved 169.2 Kb (70.54%).
#> See result in directory C:/Users/RUNNER~1/AppData/Local/Temp/Rtmp0sFMOm.

# Several urls
jpg_url <- paste0(base_url, "/extimg/example.jpg")


summary <- resmush_url(c(png_url, jpg_url))
#> 🕐  Go! | ■■■■■■■■■■■■■■■■□□□□□□□□□□□□□□□   50% [2ms] | ETA:  0s (1/2 urls)
#> 🕐  Go! | ■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■  100% [921ms] | ETA:  0s (2/2 urls)
#> 
#> ══ resmush summary ═════════════════════════════════════════════════════════════
#> ℹ Input: 2 urls with size 340.2 Kb
#> ✔ Success for 2 urls: Size now is 153.8 Kb (was 340.2 Kb). Saved 186.4 Kb (54.79%).
#> See results in directory C:/Users/RUNNER~1/AppData/Local/Temp/Rtmp0sFMOm.

# Returns an (invisible) data frame with a summary of the process
summary
#>                                                                              src_img
#> 1 https://raw.githubusercontent.com/dieghernan/resmush/main/inst//extimg/example.png
#> 2 https://raw.githubusercontent.com/dieghernan/resmush/main/inst//extimg/example.jpg
#>                                                               dest_img src_size
#> 1 C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\Rtmp0sFMOm/example_01.png 239.9 Kb
#> 2    C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\Rtmp0sFMOm/example.jpg 100.4 Kb
#>   dest_size compress_ratio notes src_bytes dest_bytes
#> 1   70.7 Kb         70.54%    OK    245618      72356
#> 2   83.2 Kb         17.15%    OK    102796      85164

# Display with png
if (require("png", quietly = TRUE)) {
  my_png <- png::readPNG(summary$dest_img[1])
  grid::grid.raster(my_png)
}


# Use with jpg and parameters
resmush_url(jpg_url)
#> ══ resmush summary ═════════════════════════════════════════════════════════════
#> ℹ Input: 1 url with size 100.4 Kb
#> ✔ Success for 1 url: Size now is 83.2 Kb (was 100.4 Kb). Saved 17.2 Kb (17.15%).
#> See result in directory C:/Users/RUNNER~1/AppData/Local/Temp/Rtmp0sFMOm.
resmush_url(jpg_url, qlty = 10)
#> ══ resmush summary ═════════════════════════════════════════════════════════════
#> ℹ Input: 1 url with size 100.4 Kb
#> ✔ Success for 1 url: Size now is 6.4 Kb (was 100.4 Kb). Saved 94 Kb (93.61%).
#> See result in directory C:/Users/RUNNER~1/AppData/Local/Temp/Rtmp0sFMOm.
# }