  We present a comprehensive search and analysis of high-redshift galaxies in a
suite of nine public JWST extragalactic fields taken in Cycle 1, covering a
total effective search area of $\sim358{\rm arcmin^2}$. Through conservative
($8\sigma$) photometric selection, we identify 341 galaxies at $5<z<14$, with
109 having spectroscopic redshift measurements from the literature, including
recent JWST NIRSpec observations. Our regression analysis reveals that the
rest-frame UV size-stellar mass relation follows $R_{\rm eff}\propto
M_*^{0.19\pm0.03}$, similar to that of star-forming galaxies at $z\sim3$, but
scaled down in size by $\sim0.7$dex. We find a much slower rate for the average
size evolution over the redshift range, $R_{\rm eff}\propto(1+z)^{-0.4\pm0.2}$,
than that derived in the literature. A fraction ($\sim13\,\%$) of our sample
are marginally resolved even in the NIRCam imaging ($<100$pc), located at
$>1.5\,\sigma$ below the derived size-mass slope. These compact sources exhibit
a high star formation surface density $\Sigma_{\rm SFR}>10\,M_\odot\,{\rm
yr^{-1}\,kpc^{-2}}$, a range in which only $<0.01\,\%$ of the local
star-forming galaxy sample is found. For those with available NIRSpec data, no
evidence of ongoing supermassive black hole accretion is observed. A potential
explanation for the observed high [OIII]-to-Hbeta ratios could be high shock
velocities, likely originating within intense star-forming regions
characterized by high $\Sigma_{\rm SFR}$. Lastly, we find that the rest-frame
UV and optical sizes of our sample are comparable. Our results are consistent
with these early galaxies building up their structures inside-out and yet to
exhibit the strong color gradient seen at lower redshift.
